20155725

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3089}}^1$

素因数の和:3134

約数の個数: 36

約数和(自身を含む): 37358100

約数和(自身を除く): 17202375

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 145, 225, 261, 435, 725, 1305, 2175, 3089, 6525, 9267, 15445, 27801, 46335, 77225, 89581, 139005, 231675, 268743, 447905, 695025, 806229, 1343715, 2239525, 4031145, 6718575, 20155725]

約数ペア:

[(1, 20155725), (3, 6718575), (5, 4031145), (9, 2239525), (15, 1343715), (25, 806229), (29, 695025), (45, 447905), (75, 268743), (87, 231675), (145, 139005), (225, 89581), (261, 77225), (435, 46335), (725, 27801), (1305, 15445), (2175, 9267), (3089, 6525)]