28129820

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{19267}}^1$

素因数の和:19349

約数の個数: 24

約数和(自身を含む): 59884944

約数和(自身を除く): 31755124

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 19267, 38534, 77068, 96335, 192670, 385340, 1406491, 2812982, 5625964, 7032455, 14064910, 28129820]

約数ペア:

[(1, 28129820), (2, 14064910), (4, 7032455), (5, 5625964), (10, 2812982), (20, 1406491), (73, 385340), (146, 192670), (292, 96335), (365, 77068), (730, 38534), (1460, 19267)]