21669964

素因数分解:

$2^2\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{353}}^1$

素因数の和:609

約数の個数: 24

約数和(自身を含む): 38656800

約数和(自身を除く): 16986836

約数列:

[1, 2, 4, 103, 149, 206, 298, 353, 412, 596, 706, 1412, 15347, 30694, 36359, 52597, 61388, 72718, 105194, 145436, 210388, 5417491, 10834982, 21669964]

約数ペア:

[(1, 21669964), (2, 10834982), (4, 5417491), (103, 210388), (149, 145436), (206, 105194), (298, 72718), (353, 61388), (412, 52597), (596, 36359), (706, 30694), (1412, 15347)]