20484490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:104

約数の個数: 96

約数和(自身を含む): 45536256

約数和(自身を除く): 25051766

約数列:

[1, 2, 5, 10, 13, 17, 23, 26, 31, 34, 46, 62, 65, 85, 115, 130, 155, 169, 170, 221, 230, 299, 310, 338, 391, 403, 442, 527, 598, 713, 782, 806, 845, 1054, 1105, 1426, 1495, 1690, 1955, 2015, 2210, 2635, 2873, 2990, 3565, 3887, 3910, 4030, 5083, 5239, 5270, 5746, 6851, 7130, 7774, 9269, 10166, 10478, 12121, 13702, 14365, 18538, 19435, 24242, 25415, 26195, 28730, 34255, 38870, 46345, 50830, 52390, 60605, 66079, 68510, 89063, 92690, 120497, 121210, 132158, 157573, 178126, 240994, 315146, 330395, 445315, 602485, 660790, 787865, 890630, 1204970, 1575730, 2048449, 4096898, 10242245, 20484490]

約数ペア:

[(1, 20484490), (2, 10242245), (5, 4096898), (10, 2048449), (13, 1575730), (17, 1204970), (23, 890630), (26, 787865), (31, 660790), (34, 602485), (46, 445315), (62, 330395), (65, 315146), (85, 240994), (115, 178126), (130, 157573), (155, 132158), (169, 121210), (170, 120497), (221, 92690), (230, 89063), (299, 68510), (310, 66079), (338, 60605), (391, 52390), (403, 50830), (442, 46345), (527, 38870), (598, 34255), (713, 28730), (782, 26195), (806, 25415), (845, 24242), (1054, 19435), (1105, 18538), (1426, 14365), (1495, 13702), (1690, 12121), (1955, 10478), (2015, 10166), (2210, 9269), (2635, 7774), (2873, 7130), (2990, 6851), (3565, 5746), (3887, 5270), (3910, 5239), (4030, 5083)]