20185721775

素因数分解:

$3^3\times 5^2\times {\mathrm{53}}^1\times {\mathrm{557}}^1\times {\mathrm{1013}}^1$

素因数の和:1642

約数の個数: 96

約数和(自身を含む): 37886771520

約数和(自身を除く): 17701049745

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 53, 75, 135, 159, 225, 265, 477, 557, 675, 795, 1013, 1325, 1431, 1671, 2385, 2785, 3039, 3975, 5013, 5065, 7155, 8355, 9117, 11925, 13925, 15039, 15195, 25065, 25325, 27351, 29521, 35775, 41775, 45585, 53689, 75195, 75975, 88563, 125325, 136755, 147605, 161067, 227925, 265689, 268445, 375975, 442815, 483201, 564241, 683775, 738025, 797067, 805335, 1328445, 1342225, 1449603, 1692723, 2214075, 2416005, 2821205, 3985335, 4026675, 5078169, 6642225, 7248015, 8463615, 12080025, 14106025, 15234507, 19926675, 25390845, 29904773, 36240075, 42318075, 76172535, 89714319, 126954225, 149523865, 269142957, 380862675, 448571595, 747619325, 807428871, 1345714785, 2242857975, 4037144355, 6728573925, 20185721775]

約数ペア:

[(1, 20185721775), (3, 6728573925), (5, 4037144355), (9, 2242857975), (15, 1345714785), (25, 807428871), (27, 747619325), (45, 448571595), (53, 380862675), (75, 269142957), (135, 149523865), (159, 126954225), (225, 89714319), (265, 76172535), (477, 42318075), (557, 36240075), (675, 29904773), (795, 25390845), (1013, 19926675), (1325, 15234507), (1431, 14106025), (1671, 12080025), (2385, 8463615), (2785, 7248015), (3039, 6642225), (3975, 5078169), (5013, 4026675), (5065, 3985335), (7155, 2821205), (8355, 2416005), (9117, 2214075), (11925, 1692723), (13925, 1449603), (15039, 1342225), (15195, 1328445), (25065, 805335), (25325, 797067), (27351, 738025), (29521, 683775), (35775, 564241), (41775, 483201), (45585, 442815), (53689, 375975), (75195, 268445), (75975, 265689), (88563, 227925), (125325, 161067), (136755, 147605)]