20099950

素因数分解:

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

素因数の和:166

約数の個数: 72

約数和(自身を含む): 43169112

約数和(自身を除く): 23069162

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 107, 130, 170, 214, 221, 289, 325, 425, 442, 535, 578, 650, 850, 1070, 1105, 1391, 1445, 1819, 2210, 2675, 2782, 2890, 3638, 3757, 5350, 5525, 6955, 7225, 7514, 9095, 11050, 13910, 14450, 18190, 18785, 23647, 30923, 34775, 37570, 45475, 47294, 61846, 69550, 90950, 93925, 118235, 154615, 187850, 236470, 309230, 401999, 591175, 773075, 803998, 1182350, 1546150, 2009995, 4019990, 10049975, 20099950]

約数ペア:

[(1, 20099950), (2, 10049975), (5, 4019990), (10, 2009995), (13, 1546150), (17, 1182350), (25, 803998), (26, 773075), (34, 591175), (50, 401999), (65, 309230), (85, 236470), (107, 187850), (130, 154615), (170, 118235), (214, 93925), (221, 90950), (289, 69550), (325, 61846), (425, 47294), (442, 45475), (535, 37570), (578, 34775), (650, 30923), (850, 23647), (1070, 18785), (1105, 18190), (1391, 14450), (1445, 13910), (1819, 11050), (2210, 9095), (2675, 7514), (2782, 7225), (2890, 6955), (3638, 5525), (3757, 5350)]