18733720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11423}}^1$

素因数の和:11475

約数の個数: 32

約数和(自身を含む): 43182720

約数和(自身を除く): 24449000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11423, 22846, 45692, 57115, 91384, 114230, 228460, 456920, 468343, 936686, 1873372, 2341715, 3746744, 4683430, 9366860, 18733720]

約数ペア:

[(1, 18733720), (2, 9366860), (4, 4683430), (5, 3746744), (8, 2341715), (10, 1873372), (20, 936686), (40, 468343), (41, 456920), (82, 228460), (164, 114230), (205, 91384), (328, 57115), (410, 45692), (820, 22846), (1640, 11423)]