18455540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:177

約数の個数: 72

約数和(自身を含む): 42911232

約数和(自身を除く): 24455692

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 103, 124, 155, 170, 206, 289, 310, 340, 412, 515, 527, 578, 620, 1030, 1054, 1156, 1445, 1751, 2060, 2108, 2635, 2890, 3193, 3502, 5270, 5780, 6386, 7004, 8755, 8959, 10540, 12772, 15965, 17510, 17918, 29767, 31930, 35020, 35836, 44795, 54281, 59534, 63860, 89590, 108562, 119068, 148835, 179180, 217124, 271405, 297670, 542810, 595340, 922777, 1085620, 1845554, 3691108, 4613885, 9227770, 18455540]

約数ペア:

[(1, 18455540), (2, 9227770), (4, 4613885), (5, 3691108), (10, 1845554), (17, 1085620), (20, 922777), (31, 595340), (34, 542810), (62, 297670), (68, 271405), (85, 217124), (103, 179180), (124, 148835), (155, 119068), (170, 108562), (206, 89590), (289, 63860), (310, 59534), (340, 54281), (412, 44795), (515, 35836), (527, 35020), (578, 31930), (620, 29767), (1030, 17918), (1054, 17510), (1156, 15965), (1445, 12772), (1751, 10540), (2060, 8959), (2108, 8755), (2635, 7004), (2890, 6386), (3193, 5780), (3502, 5270)]