20112975

素因数分解:

$3^3\times 5^2\times {\mathrm{83}}^1\times {\mathrm{359}}^1$

素因数の和:461

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 17384625

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 83, 135, 225, 249, 359, 415, 675, 747, 1077, 1245, 1795, 2075, 2241, 3231, 3735, 5385, 6225, 8975, 9693, 11205, 16155, 18675, 26925, 29797, 48465, 56025, 80775, 89391, 148985, 242325, 268173, 446955, 744925, 804519, 1340865, 2234775, 4022595, 6704325, 20112975]

約数ペア:

[(1, 20112975), (3, 6704325), (5, 4022595), (9, 2234775), (15, 1340865), (25, 804519), (27, 744925), (45, 446955), (75, 268173), (83, 242325), (135, 148985), (225, 89391), (249, 80775), (359, 56025), (415, 48465), (675, 29797), (747, 26925), (1077, 18675), (1245, 16155), (1795, 11205), (2075, 9693), (2241, 8975), (3231, 6225), (3735, 5385)]