21079240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5791}}^1$

素因数の和:5822

約数の個数: 64

約数和(自身を含む): 58383360

約数和(自身を除く): 37304120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5791, 11582, 23164, 28955, 40537, 46328, 57910, 75283, 81074, 115820, 150566, 162148, 202685, 231640, 301132, 324296, 376415, 405370, 526981, 602264, 752830, 810740, 1053962, 1505660, 1621480, 2107924, 2634905, 3011320, 4215848, 5269810, 10539620, 21079240]

約数ペア:

[(1, 21079240), (2, 10539620), (4, 5269810), (5, 4215848), (7, 3011320), (8, 2634905), (10, 2107924), (13, 1621480), (14, 1505660), (20, 1053962), (26, 810740), (28, 752830), (35, 602264), (40, 526981), (52, 405370), (56, 376415), (65, 324296), (70, 301132), (91, 231640), (104, 202685), (130, 162148), (140, 150566), (182, 115820), (260, 81074), (280, 75283), (364, 57910), (455, 46328), (520, 40537), (728, 28955), (910, 23164), (1820, 11582), (3640, 5791)]