251781640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{52021}}^1$

素因数の和:52054

約数の個数: 48

約数和(自身を含む): 622703340

約数和(自身を除く): 370921700

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, 52021, 104042, 208084, 260105, 416168, 520210, 572231, 1040420, 1144462, 2080840, 2288924, 2861155, 4577848, 5722310, 6294541, 11444620, 12589082, 22889240, 25178164, 31472705, 50356328, 62945410, 125890820, 251781640]

約数ペア:

[(1, 251781640), (2, 125890820), (4, 62945410), (5, 50356328), (8, 31472705), (10, 25178164), (11, 22889240), (20, 12589082), (22, 11444620), (40, 6294541), (44, 5722310), (55, 4577848), (88, 2861155), (110, 2288924), (121, 2080840), (220, 1144462), (242, 1040420), (440, 572231), (484, 520210), (605, 416168), (968, 260105), (1210, 208084), (2420, 104042), (4840, 52021)]