20162689340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^2\times {\mathrm{227}}^1\times {\mathrm{881}}^1$

素因数の和:1259

約数の個数: 72

約数和(自身を含む): 43184561616

約数和(自身を除く): 23021872276

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 227, 284, 355, 454, 710, 881, 908, 1135, 1420, 1762, 2270, 3524, 4405, 4540, 5041, 8810, 10082, 16117, 17620, 20164, 25205, 32234, 50410, 62551, 64468, 80585, 100820, 125102, 161170, 199987, 250204, 312755, 322340, 399974, 625510, 799948, 999935, 1144307, 1251020, 1999870, 2288614, 3999740, 4441121, 4577228, 5721535, 8882242, 11443070, 14199077, 17764484, 22205605, 22886140, 28398154, 44411210, 56796308, 70995385, 88822420, 141990770, 283981540, 1008134467, 2016268934, 4032537868, 5040672335, 10081344670, 20162689340]

約数ペア:

[(1, 20162689340), (2, 10081344670), (4, 5040672335), (5, 4032537868), (10, 2016268934), (20, 1008134467), (71, 283981540), (142, 141990770), (227, 88822420), (284, 70995385), (355, 56796308), (454, 44411210), (710, 28398154), (881, 22886140), (908, 22205605), (1135, 17764484), (1420, 14199077), (1762, 11443070), (2270, 8882242), (3524, 5721535), (4405, 4577228), (4540, 4441121), (5041, 3999740), (8810, 2288614), (10082, 1999870), (16117, 1251020), (17620, 1144307), (20164, 999935), (25205, 799948), (32234, 625510), (50410, 399974), (62551, 322340), (64468, 312755), (80585, 250204), (100820, 199987), (125102, 161170)]