640830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{521}}^1$

素因数の和:572

約数の個数: 32

約数和(自身を含む): 1578528

約数和(自身を除く): 937698

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 82, 123, 205, 246, 410, 521, 615, 1042, 1230, 1563, 2605, 3126, 5210, 7815, 15630, 21361, 42722, 64083, 106805, 128166, 213610, 320415, 640830]

約数ペア:

[(1, 640830), (2, 320415), (3, 213610), (5, 128166), (6, 106805), (10, 64083), (15, 42722), (30, 21361), (41, 15630), (82, 7815), (123, 5210), (205, 3126), (246, 2605), (410, 1563), (521, 1230), (615, 1042)]