20912060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{269}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 49805280

約数和(自身を除く): 28893220

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 169, 230, 260, 269, 299, 338, 460, 538, 598, 676, 845, 1076, 1196, 1345, 1495, 1690, 2690, 2990, 3380, 3497, 3887, 5380, 5980, 6187, 6994, 7774, 12374, 13988, 15548, 17485, 19435, 24748, 30935, 34970, 38870, 45461, 61870, 69940, 77740, 80431, 90922, 123740, 160862, 181844, 227305, 321724, 402155, 454610, 804310, 909220, 1045603, 1608620, 2091206, 4182412, 5228015, 10456030, 20912060]

約数ペア:

[(1, 20912060), (2, 10456030), (4, 5228015), (5, 4182412), (10, 2091206), (13, 1608620), (20, 1045603), (23, 909220), (26, 804310), (46, 454610), (52, 402155), (65, 321724), (92, 227305), (115, 181844), (130, 160862), (169, 123740), (230, 90922), (260, 80431), (269, 77740), (299, 69940), (338, 61870), (460, 45461), (538, 38870), (598, 34970), (676, 30935), (845, 24748), (1076, 19435), (1196, 17485), (1345, 15548), (1495, 13988), (1690, 12374), (2690, 7774), (2990, 6994), (3380, 6187), (3497, 5980), (3887, 5380)]