20278860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{911}}^1$

素因数の和:983

約数の個数: 96

約数和(自身を含む): 66189312

約数和(自身を除く): 45910452

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 53, 60, 70, 84, 105, 106, 140, 159, 210, 212, 265, 318, 371, 420, 530, 636, 742, 795, 911, 1060, 1113, 1484, 1590, 1822, 1855, 2226, 2733, 3180, 3644, 3710, 4452, 4555, 5466, 5565, 6377, 7420, 9110, 10932, 11130, 12754, 13665, 18220, 19131, 22260, 25508, 27330, 31885, 38262, 48283, 54660, 63770, 76524, 95655, 96566, 127540, 144849, 191310, 193132, 241415, 289698, 337981, 382620, 482830, 579396, 675962, 724245, 965660, 1013943, 1351924, 1448490, 1689905, 2027886, 2896980, 3379810, 4055772, 5069715, 6759620, 10139430, 20278860]

約数ペア:

[(1, 20278860), (2, 10139430), (3, 6759620), (4, 5069715), (5, 4055772), (6, 3379810), (7, 2896980), (10, 2027886), (12, 1689905), (14, 1448490), (15, 1351924), (20, 1013943), (21, 965660), (28, 724245), (30, 675962), (35, 579396), (42, 482830), (53, 382620), (60, 337981), (70, 289698), (84, 241415), (105, 193132), (106, 191310), (140, 144849), (159, 127540), (210, 96566), (212, 95655), (265, 76524), (318, 63770), (371, 54660), (420, 48283), (530, 38262), (636, 31885), (742, 27330), (795, 25508), (911, 22260), (1060, 19131), (1113, 18220), (1484, 13665), (1590, 12754), (1822, 11130), (1855, 10932), (2226, 9110), (2733, 7420), (3180, 6377), (3644, 5565), (3710, 5466), (4452, 4555)]