408091490

素因数分解:

$2^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{2143}}^1$

素因数の和:2426

約数の個数: 32

約数和(自身を含む): 745597440

約数和(自身を除く): 337505950

約数列:

[1, 2, 5, 10, 137, 139, 274, 278, 685, 695, 1370, 1390, 2143, 4286, 10715, 19043, 21430, 38086, 95215, 190430, 293591, 297877, 587182, 595754, 1467955, 1489385, 2935910, 2978770, 40809149, 81618298, 204045745, 408091490]

約数ペア:

[(1, 408091490), (2, 204045745), (5, 81618298), (10, 40809149), (137, 2978770), (139, 2935910), (274, 1489385), (278, 1467955), (685, 595754), (695, 587182), (1370, 297877), (1390, 293591), (2143, 190430), (4286, 95215), (10715, 38086), (19043, 21430)]