20888948780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{915379}}^1$

素因数の和:915558

約数の個数: 48

約数和(自身を含む): 50441099520

約数和(自身を除く): 29552150740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 652, 815, 1141, 1630, 2282, 3260, 4564, 5705, 11410, 22820, 915379, 1830758, 3661516, 4576895, 6407653, 9153790, 12815306, 18307580, 25630612, 32038265, 64076530, 128153060, 149206777, 298413554, 596827108, 746033885, 1044447439, 1492067770, 2088894878, 2984135540, 4177789756, 5222237195, 10444474390, 20888948780]

約数ペア:

[(1, 20888948780), (2, 10444474390), (4, 5222237195), (5, 4177789756), (7, 2984135540), (10, 2088894878), (14, 1492067770), (20, 1044447439), (28, 746033885), (35, 596827108), (70, 298413554), (140, 149206777), (163, 128153060), (326, 64076530), (652, 32038265), (815, 25630612), (1141, 18307580), (1630, 12815306), (2282, 9153790), (3260, 6407653), (4564, 4576895), (5705, 3661516), (11410, 1830758), (22820, 915379)]