18018440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1321}}^1$

素因数の和:1374

約数の個数: 64

約数和(自身を含む): 45688320

約数和(自身を除く): 27669880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1321, 1364, 1705, 2642, 2728, 3410, 5284, 6605, 6820, 10568, 13210, 13640, 14531, 26420, 29062, 40951, 52840, 58124, 72655, 81902, 116248, 145310, 163804, 204755, 290620, 327608, 409510, 450461, 581240, 819020, 900922, 1638040, 1801844, 2252305, 3603688, 4504610, 9009220, 18018440]

約数ペア:

[(1, 18018440), (2, 9009220), (4, 4504610), (5, 3603688), (8, 2252305), (10, 1801844), (11, 1638040), (20, 900922), (22, 819020), (31, 581240), (40, 450461), (44, 409510), (55, 327608), (62, 290620), (88, 204755), (110, 163804), (124, 145310), (155, 116248), (220, 81902), (248, 72655), (310, 58124), (341, 52840), (440, 40951), (620, 29062), (682, 26420), (1240, 14531), (1321, 13640), (1364, 13210), (1705, 10568), (2642, 6820), (2728, 6605), (3410, 5284)]