2159960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4909}}^1$

素因数の和:4931

約数の個数: 32

約数和(自身を含む): 5302800

約数和(自身を除く): 3142840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 4909, 9818, 19636, 24545, 39272, 49090, 53999, 98180, 107998, 196360, 215996, 269995, 431992, 539990, 1079980, 2159960]

約数ペア:

[(1, 2159960), (2, 1079980), (4, 539990), (5, 431992), (8, 269995), (10, 215996), (11, 196360), (20, 107998), (22, 98180), (40, 53999), (44, 49090), (55, 39272), (88, 24545), (110, 19636), (220, 9818), (440, 4909)]