20653988

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{359}}^1\times {\mathrm{757}}^1$

素因数の和:1139

約数の個数: 24

約数和(自身を含む): 38203200

約数和(自身を除く): 17549212

約数列:

[1, 2, 4, 19, 38, 76, 359, 718, 757, 1436, 1514, 3028, 6821, 13642, 14383, 27284, 28766, 57532, 271763, 543526, 1087052, 5163497, 10326994, 20653988]

約数ペア:

[(1, 20653988), (2, 10326994), (4, 5163497), (19, 1087052), (38, 543526), (76, 271763), (359, 57532), (718, 28766), (757, 27284), (1436, 14383), (1514, 13642), (3028, 6821)]