20815356720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{859}}^1\times {\mathrm{3257}}^1$

素因数の和:4163

約数の個数: 160

約数和(自身を含む): 66707159040

約数和(自身を除く): 45891802320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 859, 930, 1240, 1488, 1718, 1860, 2480, 2577, 3257, 3436, 3720, 4295, 5154, 6514, 6872, 7440, 8590, 9771, 10308, 12885, 13028, 13744, 16285, 17180, 19542, 20616, 25770, 26056, 26629, 32570, 34360, 39084, 41232, 48855, 51540, 52112, 53258, 65140, 68720, 78168, 79887, 97710, 100967, 103080, 106516, 130280, 133145, 156336, 159774, 195420, 201934, 206160, 213032, 260560, 266290, 302901, 319548, 390840, 399435, 403868, 426064, 504835, 532580, 605802, 639096, 781680, 798870, 807736, 1009670, 1065160, 1211604, 1278192, 1514505, 1597740, 1615472, 2019340, 2130320, 2423208, 2797763, 3029010, 3195480, 4038680, 4846416, 5595526, 6058020, 6390960, 8077360, 8393289, 11191052, 12116040, 13988815, 16786578, 22382104, 24232080, 27977630, 33573156, 41966445, 44764208, 55955260, 67146312, 83932890, 86730653, 111910520, 134292624, 167865780, 173461306, 223821040, 260191959, 335731560, 346922612, 433653265, 520383918, 671463120, 693845224, 867306530, 1040767836, 1300959795, 1387690448, 1734613060, 2081535672, 2601919590, 3469226120, 4163071344, 5203839180, 6938452240, 10407678360, 20815356720]

約数ペア:

[(1, 20815356720), (2, 10407678360), (3, 6938452240), (4, 5203839180), (5, 4163071344), (6, 3469226120), (8, 2601919590), (10, 2081535672), (12, 1734613060), (15, 1387690448), (16, 1300959795), (20, 1040767836), (24, 867306530), (30, 693845224), (31, 671463120), (40, 520383918), (48, 433653265), (60, 346922612), (62, 335731560), (80, 260191959), (93, 223821040), (120, 173461306), (124, 167865780), (155, 134292624), (186, 111910520), (240, 86730653), (248, 83932890), (310, 67146312), (372, 55955260), (465, 44764208), (496, 41966445), (620, 33573156), (744, 27977630), (859, 24232080), (930, 22382104), (1240, 16786578), (1488, 13988815), (1718, 12116040), (1860, 11191052), (2480, 8393289), (2577, 8077360), (3257, 6390960), (3436, 6058020), (3720, 5595526), (4295, 4846416), (5154, 4038680), (6514, 3195480), (6872, 3029010), (7440, 2797763), (8590, 2423208), (9771, 2130320), (10308, 2019340), (12885, 1615472), (13028, 1597740), (13744, 1514505), (16285, 1278192), (17180, 1211604), (19542, 1065160), (20616, 1009670), (25770, 807736), (26056, 798870), (26629, 781680), (32570, 639096), (34360, 605802), (39084, 532580), (41232, 504835), (48855, 426064), (51540, 403868), (52112, 399435), (53258, 390840), (65140, 319548), (68720, 302901), (78168, 266290), (79887, 260560), (97710, 213032), (100967, 206160), (103080, 201934), (106516, 195420), (130280, 159774), (133145, 156336)]