311057780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{13999}}^1$

素因数の和:14120

約数の個数: 48

約数和(自身を含む): 719712000

約数和(自身を除く): 408654220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 1010, 1111, 2020, 2222, 4444, 5555, 11110, 13999, 22220, 27998, 55996, 69995, 139990, 153989, 279980, 307978, 615956, 769945, 1413899, 1539890, 2827798, 3079780, 5655596, 7069495, 14138990, 15552889, 28277980, 31105778, 62211556, 77764445, 155528890, 311057780]

約数ペア:

[(1, 311057780), (2, 155528890), (4, 77764445), (5, 62211556), (10, 31105778), (11, 28277980), (20, 15552889), (22, 14138990), (44, 7069495), (55, 5655596), (101, 3079780), (110, 2827798), (202, 1539890), (220, 1413899), (404, 769945), (505, 615956), (1010, 307978), (1111, 279980), (2020, 153989), (2222, 139990), (4444, 69995), (5555, 55996), (11110, 27998), (13999, 22220)]