18233875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:264

約数の個数: 32

約数和(自身を含む): 25272000

約数和(自身を除く): 7038125

約数列:

[1, 5, 11, 25, 55, 89, 125, 149, 275, 445, 745, 979, 1375, 1639, 2225, 3725, 4895, 8195, 11125, 13261, 18625, 24475, 40975, 66305, 122375, 145871, 204875, 331525, 729355, 1657625, 3646775, 18233875]

約数ペア:

[(1, 18233875), (5, 3646775), (11, 1657625), (25, 729355), (55, 331525), (89, 204875), (125, 145871), (149, 122375), (275, 66305), (445, 40975), (745, 24475), (979, 18625), (1375, 13261), (1639, 11125), (2225, 8195), (3725, 4895)]