388996960

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{221021}}^1$

素因数の和:221047

約数の個数: 48

約数和(自身を含む): 1002555792

約数和(自身を除く): 613558832

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 221021, 442042, 884084, 1105105, 1768168, 2210210, 2431231, 3536336, 4420420, 4862462, 7072672, 8840840, 9724924, 12156155, 17681680, 19449848, 24312310, 35363360, 38899696, 48624620, 77799392, 97249240, 194498480, 388996960]

約数ペア:

[(1, 388996960), (2, 194498480), (4, 97249240), (5, 77799392), (8, 48624620), (10, 38899696), (11, 35363360), (16, 24312310), (20, 19449848), (22, 17681680), (32, 12156155), (40, 9724924), (44, 8840840), (55, 7072672), (80, 4862462), (88, 4420420), (110, 3536336), (160, 2431231), (176, 2210210), (220, 1768168), (352, 1105105), (440, 884084), (880, 442042), (1760, 221021)]