20256525

素因数分解:

$3^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{457}}^1$

素因数の和:670

約数の個数: 36

約数和(自身を含む): 36545652

約数和(自身を除く): 16289127

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 197, 225, 457, 591, 985, 1371, 1773, 2285, 2955, 4113, 4925, 6855, 8865, 11425, 14775, 20565, 34275, 44325, 90029, 102825, 270087, 450145, 810261, 1350435, 2250725, 4051305, 6752175, 20256525]

約数ペア:

[(1, 20256525), (3, 6752175), (5, 4051305), (9, 2250725), (15, 1350435), (25, 810261), (45, 450145), (75, 270087), (197, 102825), (225, 90029), (457, 44325), (591, 34275), (985, 20565), (1371, 14775), (1773, 11425), (2285, 8865), (2955, 6855), (4113, 4925)]