21503925

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3083}}^1$

素因数の和:3130

約数の個数: 36

約数和(自身を含む): 39771264

約数和(自身を除く): 18267339

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 155, 225, 279, 465, 775, 1395, 2325, 3083, 6975, 9249, 15415, 27747, 46245, 77075, 95573, 138735, 231225, 286719, 477865, 693675, 860157, 1433595, 2389325, 4300785, 7167975, 21503925]

約数ペア:

[(1, 21503925), (3, 7167975), (5, 4300785), (9, 2389325), (15, 1433595), (25, 860157), (31, 693675), (45, 477865), (75, 286719), (93, 231225), (155, 138735), (225, 95573), (279, 77075), (465, 46245), (775, 27747), (1395, 15415), (2325, 9249), (3083, 6975)]