21323990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:221

約数の個数: 48

約数和(自身を含む): 41806800

約数和(自身を除く): 20482810

約数列:

[1, 2, 5, 10, 23, 29, 46, 58, 115, 139, 145, 230, 278, 290, 529, 667, 695, 1058, 1334, 1390, 2645, 3197, 3335, 4031, 5290, 6394, 6670, 8062, 15341, 15985, 20155, 30682, 31970, 40310, 73531, 76705, 92713, 147062, 153410, 185426, 367655, 463565, 735310, 927130, 2132399, 4264798, 10661995, 21323990]

約数ペア:

[(1, 21323990), (2, 10661995), (5, 4264798), (10, 2132399), (23, 927130), (29, 735310), (46, 463565), (58, 367655), (115, 185426), (139, 153410), (145, 147062), (230, 92713), (278, 76705), (290, 73531), (529, 40310), (667, 31970), (695, 30682), (1058, 20155), (1334, 15985), (1390, 15341), (2645, 8062), (3197, 6670), (3335, 6394), (4031, 5290)]