18712250

素因数分解:

$2^1\times 5^3\times {\mathrm{29}}^2\times {\mathrm{89}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 36686520

約数和(自身を除く): 17974270

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 89, 125, 145, 178, 250, 290, 445, 725, 841, 890, 1450, 1682, 2225, 2581, 3625, 4205, 4450, 5162, 7250, 8410, 11125, 12905, 21025, 22250, 25810, 42050, 64525, 74849, 105125, 129050, 149698, 210250, 322625, 374245, 645250, 748490, 1871225, 3742450, 9356125, 18712250]

約数ペア:

[(1, 18712250), (2, 9356125), (5, 3742450), (10, 1871225), (25, 748490), (29, 645250), (50, 374245), (58, 322625), (89, 210250), (125, 149698), (145, 129050), (178, 105125), (250, 74849), (290, 64525), (445, 42050), (725, 25810), (841, 22250), (890, 21025), (1450, 12905), (1682, 11125), (2225, 8410), (2581, 7250), (3625, 5162), (4205, 4450)]