1406326820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{990371}}^1$

素因数の和:990451

約数の個数: 24

約数和(自身を含む): 2994884928

約数和(自身を除く): 1588558108

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 990371, 1980742, 3961484, 4951855, 9903710, 19807420, 70316341, 140632682, 281265364, 351581705, 703163410, 1406326820]

約数ペア:

[(1, 1406326820), (2, 703163410), (4, 351581705), (5, 281265364), (10, 140632682), (20, 70316341), (71, 19807420), (142, 9903710), (284, 4951855), (355, 3961484), (710, 1980742), (1420, 990371)]