21017915820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{5741}}^1$

素因数の和:5853

約数の個数: 216

約数和(自身を含む): 71217658512

約数和(自身を除く): 50199742692

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 43, 44, 45, 55, 60, 66, 86, 90, 99, 110, 129, 132, 165, 172, 180, 198, 215, 220, 258, 330, 387, 396, 430, 473, 495, 516, 645, 660, 774, 860, 946, 990, 1290, 1419, 1548, 1849, 1892, 1935, 1980, 2365, 2580, 2838, 3698, 3870, 4257, 4730, 5547, 5676, 5741, 7095, 7396, 7740, 8514, 9245, 9460, 11094, 11482, 14190, 16641, 17028, 17223, 18490, 20339, 21285, 22188, 22964, 27735, 28380, 28705, 33282, 34446, 36980, 40678, 42570, 51669, 55470, 57410, 61017, 63151, 66564, 68892, 81356, 83205, 85140, 86115, 101695, 103338, 110940, 114820, 122034, 126302, 166410, 172230, 183051, 189453, 203390, 206676, 244068, 246863, 252604, 258345, 305085, 315755, 332820, 344460, 366102, 378906, 406780, 493726, 516690, 568359, 610170, 631510, 732204, 740589, 757812, 915255, 947265, 987452, 1033380, 1136718, 1220340, 1234315, 1263020, 1481178, 1830510, 1894530, 2221767, 2273436, 2468630, 2715493, 2841795, 2962356, 3661020, 3702945, 3789060, 4443534, 4937260, 5430986, 5683590, 7405890, 8146479, 8887068, 10615109, 10861972, 11108835, 11367180, 13577465, 14811780, 16292958, 21230218, 22217670, 24439437, 27154930, 31845327, 32585916, 40732395, 42460436, 44435340, 48878874, 53075545, 54309860, 63690654, 81464790, 95535981, 97757748, 106151090, 116766199, 122197185, 127381308, 159226635, 162929580, 191071962, 212302180, 233532398, 244394370, 318453270, 350298597, 382143924, 467064796, 477679905, 488788740, 583830995, 636906540, 700597194, 955359810, 1050895791, 1167661990, 1401194388, 1751492985, 1910719620, 2101791582, 2335323980, 3502985970, 4203583164, 5254478955, 7005971940, 10508957910, 21017915820]

約数ペア:

[(1, 21017915820), (2, 10508957910), (3, 7005971940), (4, 5254478955), (5, 4203583164), (6, 3502985970), (9, 2335323980), (10, 2101791582), (11, 1910719620), (12, 1751492985), (15, 1401194388), (18, 1167661990), (20, 1050895791), (22, 955359810), (30, 700597194), (33, 636906540), (36, 583830995), (43, 488788740), (44, 477679905), (45, 467064796), (55, 382143924), (60, 350298597), (66, 318453270), (86, 244394370), (90, 233532398), (99, 212302180), (110, 191071962), (129, 162929580), (132, 159226635), (165, 127381308), (172, 122197185), (180, 116766199), (198, 106151090), (215, 97757748), (220, 95535981), (258, 81464790), (330, 63690654), (387, 54309860), (396, 53075545), (430, 48878874), (473, 44435340), (495, 42460436), (516, 40732395), (645, 32585916), (660, 31845327), (774, 27154930), (860, 24439437), (946, 22217670), (990, 21230218), (1290, 16292958), (1419, 14811780), (1548, 13577465), (1849, 11367180), (1892, 11108835), (1935, 10861972), (1980, 10615109), (2365, 8887068), (2580, 8146479), (2838, 7405890), (3698, 5683590), (3870, 5430986), (4257, 4937260), (4730, 4443534), (5547, 3789060), (5676, 3702945), (5741, 3661020), (7095, 2962356), (7396, 2841795), (7740, 2715493), (8514, 2468630), (9245, 2273436), (9460, 2221767), (11094, 1894530), (11482, 1830510), (14190, 1481178), (16641, 1263020), (17028, 1234315), (17223, 1220340), (18490, 1136718), (20339, 1033380), (21285, 987452), (22188, 947265), (22964, 915255), (27735, 757812), (28380, 740589), (28705, 732204), (33282, 631510), (34446, 610170), (36980, 568359), (40678, 516690), (42570, 493726), (51669, 406780), (55470, 378906), (57410, 366102), (61017, 344460), (63151, 332820), (66564, 315755), (68892, 305085), (81356, 258345), (83205, 252604), (85140, 246863), (86115, 244068), (101695, 206676), (103338, 203390), (110940, 189453), (114820, 183051), (122034, 172230), (126302, 166410)]