18490960

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1277}}^1$

素因数の和:1471

約数の個数: 40

約数和(自身を含む): 43262856

約数和(自身を除く): 24771896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1277, 1448, 1810, 2554, 2896, 3620, 5108, 6385, 7240, 10216, 12770, 14480, 20432, 25540, 51080, 102160, 231137, 462274, 924548, 1155685, 1849096, 2311370, 3698192, 4622740, 9245480, 18490960]

約数ペア:

[(1, 18490960), (2, 9245480), (4, 4622740), (5, 3698192), (8, 2311370), (10, 1849096), (16, 1155685), (20, 924548), (40, 462274), (80, 231137), (181, 102160), (362, 51080), (724, 25540), (905, 20432), (1277, 14480), (1448, 12770), (1810, 10216), (2554, 7240), (2896, 6385), (3620, 5108)]