20478420

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12641}}^1$

素因数の和:12662

約数の個数: 60

約数和(自身を含む): 64246644

約数和(自身を除く): 43768224

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12641, 25282, 37923, 50564, 63205, 75846, 113769, 126410, 151692, 189615, 227538, 252820, 341307, 379230, 455076, 568845, 682614, 758460, 1023921, 1137690, 1365228, 1706535, 2047842, 2275380, 3413070, 4095684, 5119605, 6826140, 10239210, 20478420]

約数ペア:

[(1, 20478420), (2, 10239210), (3, 6826140), (4, 5119605), (5, 4095684), (6, 3413070), (9, 2275380), (10, 2047842), (12, 1706535), (15, 1365228), (18, 1137690), (20, 1023921), (27, 758460), (30, 682614), (36, 568845), (45, 455076), (54, 379230), (60, 341307), (81, 252820), (90, 227538), (108, 189615), (135, 151692), (162, 126410), (180, 113769), (270, 75846), (324, 63205), (405, 50564), (540, 37923), (810, 25282), (1620, 12641)]