80987810

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{261251}}^1$

素因数の和:261289

約数の個数: 16

約数和(自身を含む): 150481152

約数和(自身を除く): 69493342

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 261251, 522502, 1306255, 2612510, 8098781, 16197562, 40493905, 80987810]

約数ペア:

[(1, 80987810), (2, 40493905), (5, 16197562), (10, 8098781), (31, 2612510), (62, 1306255), (155, 522502), (310, 261251)]