19913985

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1621}}^1$

素因数の和:1655

約数の個数: 64

約数和(自身を含む): 43599360

約数和(自身を除く): 23685375

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 91, 105, 117, 135, 189, 195, 273, 315, 351, 455, 585, 819, 945, 1365, 1621, 1755, 2457, 4095, 4863, 8105, 11347, 12285, 14589, 21073, 24315, 34041, 43767, 56735, 63219, 72945, 102123, 105365, 147511, 170205, 189657, 218835, 306369, 316095, 442533, 510615, 568971, 737555, 948285, 1327599, 1531845, 2212665, 2844855, 3982797, 6637995, 19913985]

約数ペア:

[(1, 19913985), (3, 6637995), (5, 3982797), (7, 2844855), (9, 2212665), (13, 1531845), (15, 1327599), (21, 948285), (27, 737555), (35, 568971), (39, 510615), (45, 442533), (63, 316095), (65, 306369), (91, 218835), (105, 189657), (117, 170205), (135, 147511), (189, 105365), (195, 102123), (273, 72945), (315, 63219), (351, 56735), (455, 43767), (585, 34041), (819, 24315), (945, 21073), (1365, 14589), (1621, 12285), (1755, 11347), (2457, 8105), (4095, 4863)]