261403480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{502699}}^1$

素因数の和:502723

約数の個数: 32

約数和(自身を含む): 633402000

約数和(自身を除く): 371998520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 502699, 1005398, 2010796, 2513495, 4021592, 5026990, 6535087, 10053980, 13070174, 20107960, 26140348, 32675435, 52280696, 65350870, 130701740, 261403480]

約数ペア:

[(1, 261403480), (2, 130701740), (4, 65350870), (5, 52280696), (8, 32675435), (10, 26140348), (13, 20107960), (20, 13070174), (26, 10053980), (40, 6535087), (52, 5026990), (65, 4021592), (104, 2513495), (130, 2010796), (260, 1005398), (520, 502699)]