20398725

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5333}}^1$

素因数の和:5366

約数の個数: 36

約数和(自身を含む): 38692836

約数和(自身を除く): 18294111

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5333, 15999, 26665, 47997, 79995, 90661, 133325, 239985, 271983, 399975, 453305, 815949, 1199925, 1359915, 2266525, 4079745, 6799575, 20398725]

約数ペア:

[(1, 20398725), (3, 6799575), (5, 4079745), (9, 2266525), (15, 1359915), (17, 1199925), (25, 815949), (45, 453305), (51, 399975), (75, 271983), (85, 239985), (153, 133325), (225, 90661), (255, 79995), (425, 47997), (765, 26665), (1275, 15999), (3825, 5333)]