21343275

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3271}}^1$

素因数の和:3316

約数の個数: 36

約数和(自身を含む): 39558480

約数和(自身を除く): 18215205

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 145, 225, 261, 435, 725, 1305, 2175, 3271, 6525, 9813, 16355, 29439, 49065, 81775, 94859, 147195, 245325, 284577, 474295, 735975, 853731, 1422885, 2371475, 4268655, 7114425, 21343275]

約数ペア:

[(1, 21343275), (3, 7114425), (5, 4268655), (9, 2371475), (15, 1422885), (25, 853731), (29, 735975), (45, 474295), (75, 284577), (87, 245325), (145, 147195), (225, 94859), (261, 81775), (435, 49065), (725, 29439), (1305, 16355), (2175, 9813), (3271, 6525)]