13121240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2711}}^1$

素因数の和:2744

約数の個数: 48

約数和(自身を含む): 32462640

約数和(自身を除く): 19341400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 2711, 4840, 5422, 10844, 13555, 21688, 27110, 29821, 54220, 59642, 108440, 119284, 149105, 238568, 298210, 328031, 596420, 656062, 1192840, 1312124, 1640155, 2624248, 3280310, 6560620, 13121240]

約数ペア:

[(1, 13121240), (2, 6560620), (4, 3280310), (5, 2624248), (8, 1640155), (10, 1312124), (11, 1192840), (20, 656062), (22, 596420), (40, 328031), (44, 298210), (55, 238568), (88, 149105), (110, 119284), (121, 108440), (220, 59642), (242, 54220), (440, 29821), (484, 27110), (605, 21688), (968, 13555), (1210, 10844), (2420, 5422), (2711, 4840)]