18701816

素因数分解:

$2^3\times 7^1\times {\mathrm{521}}^1\times {\mathrm{641}}^1$

素因数の和:1175

約数の個数: 32

約数和(自身を含む): 40214880

約数和(自身を除く): 21513064

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 521, 641, 1042, 1282, 2084, 2564, 3647, 4168, 4487, 5128, 7294, 8974, 14588, 17948, 29176, 35896, 333961, 667922, 1335844, 2337727, 2671688, 4675454, 9350908, 18701816]

約数ペア:

[(1, 18701816), (2, 9350908), (4, 4675454), (7, 2671688), (8, 2337727), (14, 1335844), (28, 667922), (56, 333961), (521, 35896), (641, 29176), (1042, 17948), (1282, 14588), (2084, 8974), (2564, 7294), (3647, 5128), (4168, 4487)]