12788980

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{3923}}^1$

素因数の和:4095

約数の個数: 24

約数和(自身を含む): 27028512

約数和(自身を除く): 14239532

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 3923, 7846, 15692, 19615, 39230, 78460, 639449, 1278898, 2557796, 3197245, 6394490, 12788980]

約数ペア:

[(1, 12788980), (2, 6394490), (4, 3197245), (5, 2557796), (10, 1278898), (20, 639449), (163, 78460), (326, 39230), (652, 19615), (815, 15692), (1630, 7846), (3260, 3923)]