12870620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{617}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 31147200

約数和(自身を除く): 18276580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 617, 745, 1043, 1234, 1490, 2086, 2468, 2980, 3085, 4172, 4319, 5215, 6170, 8638, 10430, 12340, 17276, 20860, 21595, 43190, 86380, 91933, 183866, 367732, 459665, 643531, 919330, 1287062, 1838660, 2574124, 3217655, 6435310, 12870620]

約数ペア:

[(1, 12870620), (2, 6435310), (4, 3217655), (5, 2574124), (7, 1838660), (10, 1287062), (14, 919330), (20, 643531), (28, 459665), (35, 367732), (70, 183866), (140, 91933), (149, 86380), (298, 43190), (596, 21595), (617, 20860), (745, 17276), (1043, 12340), (1234, 10430), (1490, 8638), (2086, 6170), (2468, 5215), (2980, 4319), (3085, 4172)]