8639840

素因数分解:

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

素因数の和:4935

約数の個数: 48

約数和(自身を含む): 22271760

約数和(自身を除く): 13631920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 4909, 9818, 19636, 24545, 39272, 49090, 53999, 78544, 98180, 107998, 157088, 196360, 215996, 269995, 392720, 431992, 539990, 785440, 863984, 1079980, 1727968, 2159960, 4319920, 8639840]

約数ペア:

[(1, 8639840), (2, 4319920), (4, 2159960), (5, 1727968), (8, 1079980), (10, 863984), (11, 785440), (16, 539990), (20, 431992), (22, 392720), (32, 269995), (40, 215996), (44, 196360), (55, 157088), (80, 107998), (88, 98180), (110, 78544), (160, 53999), (176, 49090), (220, 39272), (352, 24545), (440, 19636), (880, 9818), (1760, 4909)]