20702475

素因数分解:

$3^2\times 5^2\times {\mathrm{101}}^1\times {\mathrm{911}}^1$

素因数の和:1028

約数の個数: 36

約数和(自身を含む): 37488672

約数和(自身を除く): 16786197

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 101, 225, 303, 505, 909, 911, 1515, 2525, 2733, 4545, 4555, 7575, 8199, 13665, 22725, 22775, 40995, 68325, 92011, 204975, 276033, 460055, 828099, 1380165, 2300275, 4140495, 6900825, 20702475]

約数ペア:

[(1, 20702475), (3, 6900825), (5, 4140495), (9, 2300275), (15, 1380165), (25, 828099), (45, 460055), (75, 276033), (101, 204975), (225, 92011), (303, 68325), (505, 40995), (909, 22775), (911, 22725), (1515, 13665), (2525, 8199), (2733, 7575), (4545, 4555)]