21187260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3797}}^1$

素因数の和:3843

約数の個数: 72

約数和(自身を含む): 66358656

約数和(自身を除く): 45171396

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3797, 5580, 7594, 11391, 15188, 18985, 22782, 34173, 37970, 45564, 56955, 68346, 75940, 113910, 117707, 136692, 170865, 227820, 235414, 341730, 353121, 470828, 588535, 683460, 706242, 1059363, 1177070, 1412484, 1765605, 2118726, 2354140, 3531210, 4237452, 5296815, 7062420, 10593630, 21187260]

約数ペア:

[(1, 21187260), (2, 10593630), (3, 7062420), (4, 5296815), (5, 4237452), (6, 3531210), (9, 2354140), (10, 2118726), (12, 1765605), (15, 1412484), (18, 1177070), (20, 1059363), (30, 706242), (31, 683460), (36, 588535), (45, 470828), (60, 353121), (62, 341730), (90, 235414), (93, 227820), (124, 170865), (155, 136692), (180, 117707), (186, 113910), (279, 75940), (310, 68346), (372, 56955), (465, 45564), (558, 37970), (620, 34173), (930, 22782), (1116, 18985), (1395, 15188), (1860, 11391), (2790, 7594), (3797, 5580)]