221263880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{134917}}^1$

素因数の和:134969

約数の個数: 32

約数和(自身を含む): 509990040

約数和(自身を除く): 288726160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 134917, 269834, 539668, 674585, 1079336, 1349170, 2698340, 5396680, 5531597, 11063194, 22126388, 27657985, 44252776, 55315970, 110631940, 221263880]

約数ペア:

[(1, 221263880), (2, 110631940), (4, 55315970), (5, 44252776), (8, 27657985), (10, 22126388), (20, 11063194), (40, 5531597), (41, 5396680), (82, 2698340), (164, 1349170), (205, 1079336), (328, 674585), (410, 539668), (820, 269834), (1640, 134917)]