21298860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:404

約数の個数: 144

約数和(自身を含む): 72963072

約数和(自身を除く): 51664212

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 31, 33, 36, 44, 45, 55, 60, 62, 66, 90, 93, 99, 110, 124, 132, 155, 165, 180, 186, 198, 220, 279, 310, 330, 341, 347, 372, 396, 465, 495, 558, 620, 660, 682, 694, 930, 990, 1023, 1041, 1116, 1364, 1388, 1395, 1705, 1735, 1860, 1980, 2046, 2082, 2790, 3069, 3123, 3410, 3470, 3817, 4092, 4164, 5115, 5205, 5580, 6138, 6246, 6820, 6940, 7634, 10230, 10410, 10757, 11451, 12276, 12492, 15268, 15345, 15615, 19085, 20460, 20820, 21514, 22902, 30690, 31230, 32271, 34353, 38170, 43028, 45804, 53785, 57255, 61380, 62460, 64542, 68706, 76340, 96813, 107570, 114510, 118327, 129084, 137412, 161355, 171765, 193626, 215140, 229020, 236654, 322710, 343530, 354981, 387252, 473308, 484065, 591635, 645420, 687060, 709962, 968130, 1064943, 1183270, 1419924, 1774905, 1936260, 2129886, 2366540, 3549810, 4259772, 5324715, 7099620, 10649430, 21298860]

約数ペア:

[(1, 21298860), (2, 10649430), (3, 7099620), (4, 5324715), (5, 4259772), (6, 3549810), (9, 2366540), (10, 2129886), (11, 1936260), (12, 1774905), (15, 1419924), (18, 1183270), (20, 1064943), (22, 968130), (30, 709962), (31, 687060), (33, 645420), (36, 591635), (44, 484065), (45, 473308), (55, 387252), (60, 354981), (62, 343530), (66, 322710), (90, 236654), (93, 229020), (99, 215140), (110, 193626), (124, 171765), (132, 161355), (155, 137412), (165, 129084), (180, 118327), (186, 114510), (198, 107570), (220, 96813), (279, 76340), (310, 68706), (330, 64542), (341, 62460), (347, 61380), (372, 57255), (396, 53785), (465, 45804), (495, 43028), (558, 38170), (620, 34353), (660, 32271), (682, 31230), (694, 30690), (930, 22902), (990, 21514), (1023, 20820), (1041, 20460), (1116, 19085), (1364, 15615), (1388, 15345), (1395, 15268), (1705, 12492), (1735, 12276), (1860, 11451), (1980, 10757), (2046, 10410), (2082, 10230), (2790, 7634), (3069, 6940), (3123, 6820), (3410, 6246), (3470, 6138), (3817, 5580), (4092, 5205), (4164, 5115)]