12787280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1321}}^1$

素因数の和:1356

約数の個数: 60

約数和(自身を含む): 32703636

約数和(自身を除く): 19916356

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1321, 1936, 2420, 2642, 4840, 5284, 6605, 9680, 10568, 13210, 14531, 21136, 26420, 29062, 52840, 58124, 72655, 105680, 116248, 145310, 159841, 232496, 290620, 319682, 581240, 639364, 799205, 1162480, 1278728, 1598410, 2557456, 3196820, 6393640, 12787280]

約数ペア:

[(1, 12787280), (2, 6393640), (4, 3196820), (5, 2557456), (8, 1598410), (10, 1278728), (11, 1162480), (16, 799205), (20, 639364), (22, 581240), (40, 319682), (44, 290620), (55, 232496), (80, 159841), (88, 145310), (110, 116248), (121, 105680), (176, 72655), (220, 58124), (242, 52840), (440, 29062), (484, 26420), (605, 21136), (880, 14531), (968, 13210), (1210, 10568), (1321, 9680), (1936, 6605), (2420, 5284), (2642, 4840)]