80980990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{261229}}^1$

素因数の和:261267

約数の個数: 16

約数和(自身を含む): 150468480

約数和(自身を除く): 69487490

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 261229, 522458, 1306145, 2612290, 8098099, 16196198, 40490495, 80980990]

約数ペア:

[(1, 80980990), (2, 40490495), (5, 16196198), (10, 8098099), (31, 2612290), (62, 1306145), (155, 522458), (310, 261229)]