18971425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{463}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 25891200

約数和(自身を除く): 6919775

約数列:

[1, 5, 11, 25, 55, 149, 275, 463, 745, 1639, 2315, 3725, 5093, 8195, 11575, 25465, 40975, 68987, 127325, 344935, 758857, 1724675, 3794285, 18971425]

約数ペア:

[(1, 18971425), (5, 3794285), (11, 1724675), (25, 758857), (55, 344935), (149, 127325), (275, 68987), (463, 40975), (745, 25465), (1639, 11575), (2315, 8195), (3725, 5093)]