18961260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4451}}^1$

素因数の和:4534

約数の個数: 48

約数和(自身を含む): 53851392

約数和(自身を除く): 34890132

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 4451, 8902, 13353, 17804, 22255, 26706, 44510, 53412, 66765, 89020, 133530, 267060, 316021, 632042, 948063, 1264084, 1580105, 1896126, 3160210, 3792252, 4740315, 6320420, 9480630, 18961260]

約数ペア:

[(1, 18961260), (2, 9480630), (3, 6320420), (4, 4740315), (5, 3792252), (6, 3160210), (10, 1896126), (12, 1580105), (15, 1264084), (20, 948063), (30, 632042), (60, 316021), (71, 267060), (142, 133530), (213, 89020), (284, 66765), (355, 53412), (426, 44510), (710, 26706), (852, 22255), (1065, 17804), (1420, 13353), (2130, 8902), (4260, 4451)]