218978980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{557}}^1\times {\mathrm{1787}}^1$

素因数の和:2364

約数の個数: 48

約数和(自身を含む): 502842816

約数和(自身を除く): 283863836

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 557, 1114, 1787, 2228, 2785, 3574, 5570, 6127, 7148, 8935, 11140, 12254, 17870, 19657, 24508, 30635, 35740, 39314, 61270, 78628, 98285, 122540, 196570, 393140, 995359, 1990718, 3981436, 4976795, 9953590, 10948949, 19907180, 21897898, 43795796, 54744745, 109489490, 218978980]

約数ペア:

[(1, 218978980), (2, 109489490), (4, 54744745), (5, 43795796), (10, 21897898), (11, 19907180), (20, 10948949), (22, 9953590), (44, 4976795), (55, 3981436), (110, 1990718), (220, 995359), (557, 393140), (1114, 196570), (1787, 122540), (2228, 98285), (2785, 78628), (3574, 61270), (5570, 39314), (6127, 35740), (7148, 30635), (8935, 24508), (11140, 19657), (12254, 17870)]