20257875

素因数分解:

$3^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1637}}^1$

素因数の和:1669

約数の個数: 48

約数和(自身を含む): 39862368

約数和(自身を除く): 19604493

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 125, 165, 225, 275, 375, 495, 825, 1125, 1375, 1637, 2475, 4125, 4911, 8185, 12375, 14733, 18007, 24555, 40925, 54021, 73665, 90035, 122775, 162063, 204625, 270105, 368325, 450175, 613875, 810315, 1350525, 1841625, 2250875, 4051575, 6752625, 20257875]

約数ペア:

[(1, 20257875), (3, 6752625), (5, 4051575), (9, 2250875), (11, 1841625), (15, 1350525), (25, 810315), (33, 613875), (45, 450175), (55, 368325), (75, 270105), (99, 204625), (125, 162063), (165, 122775), (225, 90035), (275, 73665), (375, 54021), (495, 40925), (825, 24555), (1125, 18007), (1375, 14733), (1637, 12375), (2475, 8185), (4125, 4911)]