1280491580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2065309}}^1$

素因数の和:2065349

約数の個数: 24

約数和(自身を含む): 2775776640

約数和(自身を除く): 1495285060

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 2065309, 4130618, 8261236, 10326545, 20653090, 41306180, 64024579, 128049158, 256098316, 320122895, 640245790, 1280491580]

約数ペア:

[(1, 1280491580), (2, 640245790), (4, 320122895), (5, 256098316), (10, 128049158), (20, 64024579), (31, 41306180), (62, 20653090), (124, 10326545), (155, 8261236), (310, 4130618), (620, 2065309)]