215456975

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{317}}^1\times {\mathrm{877}}^1$

素因数の和:1235

約数の個数: 24

約数和(自身を含む): 276970368

約数和(自身を除く): 61513393

約数列:

[1, 5, 25, 31, 155, 317, 775, 877, 1585, 4385, 7925, 9827, 21925, 27187, 49135, 135935, 245675, 278009, 679675, 1390045, 6950225, 8618279, 43091395, 215456975]

約数ペア:

[(1, 215456975), (5, 43091395), (25, 8618279), (31, 6950225), (155, 1390045), (317, 679675), (775, 278009), (877, 245675), (1585, 135935), (4385, 49135), (7925, 27187), (9827, 21925)]