81575560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{467}}^1$

素因数の和:886

約数の個数: 64

約数和(自身を含む): 201165120

約数和(自身を除く): 119589560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 397, 440, 467, 794, 934, 1588, 1868, 1985, 2335, 3176, 3736, 3970, 4367, 4670, 5137, 7940, 8734, 9340, 10274, 15880, 17468, 18680, 20548, 21835, 25685, 34936, 41096, 43670, 51370, 87340, 102740, 174680, 185399, 205480, 370798, 741596, 926995, 1483192, 1853990, 2039389, 3707980, 4078778, 7415960, 8157556, 10196945, 16315112, 20393890, 40787780, 81575560]

約数ペア:

[(1, 81575560), (2, 40787780), (4, 20393890), (5, 16315112), (8, 10196945), (10, 8157556), (11, 7415960), (20, 4078778), (22, 3707980), (40, 2039389), (44, 1853990), (55, 1483192), (88, 926995), (110, 741596), (220, 370798), (397, 205480), (440, 185399), (467, 174680), (794, 102740), (934, 87340), (1588, 51370), (1868, 43670), (1985, 41096), (2335, 34936), (3176, 25685), (3736, 21835), (3970, 20548), (4367, 18680), (4670, 17468), (5137, 15880), (7940, 10274), (8734, 9340)]