21303980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1597}}^1$

素因数の和:1658

約数の個数: 48

約数和(自身を含む): 48323520

約数和(自身を除く): 27019540

約数列:

[1, 2, 4, 5, 10, 20, 23, 29, 46, 58, 92, 115, 116, 145, 230, 290, 460, 580, 667, 1334, 1597, 2668, 3194, 3335, 6388, 6670, 7985, 13340, 15970, 31940, 36731, 46313, 73462, 92626, 146924, 183655, 185252, 231565, 367310, 463130, 734620, 926260, 1065199, 2130398, 4260796, 5325995, 10651990, 21303980]

約数ペア:

[(1, 21303980), (2, 10651990), (4, 5325995), (5, 4260796), (10, 2130398), (20, 1065199), (23, 926260), (29, 734620), (46, 463130), (58, 367310), (92, 231565), (115, 185252), (116, 183655), (145, 146924), (230, 92626), (290, 73462), (460, 46313), (580, 36731), (667, 31940), (1334, 15970), (1597, 13340), (2668, 7985), (3194, 6670), (3335, 6388)]