4019990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{107}}^1$

素因数の和:161

約数の個数: 48

約数和(自身を含む): 8355312

約数和(自身を除く): 4335322

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 107, 130, 170, 214, 221, 289, 442, 535, 578, 1070, 1105, 1391, 1445, 1819, 2210, 2782, 2890, 3638, 3757, 6955, 7514, 9095, 13910, 18190, 18785, 23647, 30923, 37570, 47294, 61846, 118235, 154615, 236470, 309230, 401999, 803998, 2009995, 4019990]

約数ペア:

[(1, 4019990), (2, 2009995), (5, 803998), (10, 401999), (13, 309230), (17, 236470), (26, 154615), (34, 118235), (65, 61846), (85, 47294), (107, 37570), (130, 30923), (170, 23647), (214, 18785), (221, 18190), (289, 13910), (442, 9095), (535, 7514), (578, 6955), (1070, 3757), (1105, 3638), (1391, 2890), (1445, 2782), (1819, 2210)]