21718490

素因数分解:

$2^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:478

約数の個数: 32

約数和(自身を含む): 40201920

約数和(自身を除く): 18483430

約数列:

[1, 2, 5, 10, 59, 118, 131, 262, 281, 295, 562, 590, 655, 1310, 1405, 2810, 7729, 15458, 16579, 33158, 36811, 38645, 73622, 77290, 82895, 165790, 184055, 368110, 2171849, 4343698, 10859245, 21718490]

約数ペア:

[(1, 21718490), (2, 10859245), (5, 4343698), (10, 2171849), (59, 368110), (118, 184055), (131, 165790), (262, 82895), (281, 77290), (295, 73622), (562, 38645), (590, 36811), (655, 33158), (1310, 16579), (1405, 15458), (2810, 7729)]