21929355

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1619}}^1$

素因数の和:1680

約数の個数: 48

約数和(自身を含む): 44478720

約数和(自身を除く): 22549365

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 63, 105, 129, 215, 301, 315, 387, 645, 903, 1505, 1619, 1935, 2709, 4515, 4857, 8095, 11333, 13545, 14571, 24285, 33999, 56665, 69617, 72855, 101997, 169995, 208851, 348085, 487319, 509985, 626553, 1044255, 1461957, 2436595, 3132765, 4385871, 7309785, 21929355]

約数ペア:

[(1, 21929355), (3, 7309785), (5, 4385871), (7, 3132765), (9, 2436595), (15, 1461957), (21, 1044255), (35, 626553), (43, 509985), (45, 487319), (63, 348085), (105, 208851), (129, 169995), (215, 101997), (301, 72855), (315, 69617), (387, 56665), (645, 33999), (903, 24285), (1505, 14571), (1619, 13545), (1935, 11333), (2709, 8095), (4515, 4857)]