20802180080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1823}}^1\times {\mathrm{12967}}^1$

素因数の和:14814

約数の個数: 80

約数和(自身を含む): 52794906624

約数和(自身を除く): 31992726544

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 1823, 3646, 7292, 9115, 12967, 14584, 18230, 20053, 25934, 29168, 36460, 40106, 51868, 64835, 72920, 80212, 100265, 103736, 129670, 142637, 145840, 160424, 200530, 207472, 259340, 285274, 320848, 401060, 518680, 570548, 713185, 802120, 1037360, 1141096, 1426370, 1604240, 2282192, 2852740, 5705480, 11410960, 23638841, 47277682, 94555364, 118194205, 189110728, 236388410, 260027251, 378221456, 472776820, 520054502, 945553640, 1040109004, 1300136255, 1891107280, 2080218008, 2600272510, 4160436016, 5200545020, 10401090040, 20802180080]

約数ペア:

[(1, 20802180080), (2, 10401090040), (4, 5200545020), (5, 4160436016), (8, 2600272510), (10, 2080218008), (11, 1891107280), (16, 1300136255), (20, 1040109004), (22, 945553640), (40, 520054502), (44, 472776820), (55, 378221456), (80, 260027251), (88, 236388410), (110, 189110728), (176, 118194205), (220, 94555364), (440, 47277682), (880, 23638841), (1823, 11410960), (3646, 5705480), (7292, 2852740), (9115, 2282192), (12967, 1604240), (14584, 1426370), (18230, 1141096), (20053, 1037360), (25934, 802120), (29168, 713185), (36460, 570548), (40106, 518680), (51868, 401060), (64835, 320848), (72920, 285274), (80212, 259340), (100265, 207472), (103736, 200530), (129670, 160424), (142637, 145840)]