31561640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{6521}}^1$

素因数の和:6554

約数の個数: 48

約数和(自身を含む): 78068340

約数和(自身を除く): 46506700

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, 4840, 6521, 13042, 26084, 32605, 52168, 65210, 71731, 130420, 143462, 260840, 286924, 358655, 573848, 717310, 789041, 1434620, 1578082, 2869240, 3156164, 3945205, 6312328, 7890410, 15780820, 31561640]

約数ペア:

[(1, 31561640), (2, 15780820), (4, 7890410), (5, 6312328), (8, 3945205), (10, 3156164), (11, 2869240), (20, 1578082), (22, 1434620), (40, 789041), (44, 717310), (55, 573848), (88, 358655), (110, 286924), (121, 260840), (220, 143462), (242, 130420), (440, 71731), (484, 65210), (605, 52168), (968, 32605), (1210, 26084), (2420, 13042), (4840, 6521)]