20425275

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{6983}}^1$

素因数の和:7012

約数の個数: 36

約数和(自身を含む): 39403728

約数和(自身を除く): 18978453

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 6983, 20949, 34915, 62847, 90779, 104745, 174575, 272337, 314235, 453895, 523725, 817011, 1361685, 1571175, 2269475, 4085055, 6808425, 20425275]

約数ペア:

[(1, 20425275), (3, 6808425), (5, 4085055), (9, 2269475), (13, 1571175), (15, 1361685), (25, 817011), (39, 523725), (45, 453895), (65, 314235), (75, 272337), (117, 174575), (195, 104745), (225, 90779), (325, 62847), (585, 34915), (975, 20949), (2925, 6983)]