890630

素因数分解:

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

素因数の和:81

約数の個数: 48

約数和(自身を含む): 1897344

約数和(自身を除く): 1006714

約数列:

[1, 2, 5, 10, 13, 17, 26, 31, 34, 62, 65, 85, 130, 155, 169, 170, 221, 310, 338, 403, 442, 527, 806, 845, 1054, 1105, 1690, 2015, 2210, 2635, 2873, 4030, 5239, 5270, 5746, 6851, 10478, 13702, 14365, 26195, 28730, 34255, 52390, 68510, 89063, 178126, 445315, 890630]

約数ペア:

[(1, 890630), (2, 445315), (5, 178126), (10, 89063), (13, 68510), (17, 52390), (26, 34255), (31, 28730), (34, 26195), (62, 14365), (65, 13702), (85, 10478), (130, 6851), (155, 5746), (169, 5270), (170, 5239), (221, 4030), (310, 2873), (338, 2635), (403, 2210), (442, 2015), (527, 1690), (806, 1105), (845, 1054)]