199921785

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{2383}}^1$

素因数の和:2462

約数の個数: 64

約数和(自身を含む): 395476992

約数和(自身を除く): 195555207

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 47, 51, 85, 105, 119, 141, 235, 255, 329, 357, 595, 705, 799, 987, 1645, 1785, 2383, 2397, 3995, 4935, 5593, 7149, 11915, 11985, 16681, 16779, 27965, 35745, 40511, 50043, 83405, 83895, 112001, 121533, 202555, 250215, 283577, 336003, 560005, 607665, 784007, 850731, 1417885, 1680015, 1904017, 2352021, 3920035, 4253655, 5712051, 9520085, 11760105, 13328119, 28560255, 39984357, 66640595, 199921785]

約数ペア:

[(1, 199921785), (3, 66640595), (5, 39984357), (7, 28560255), (15, 13328119), (17, 11760105), (21, 9520085), (35, 5712051), (47, 4253655), (51, 3920035), (85, 2352021), (105, 1904017), (119, 1680015), (141, 1417885), (235, 850731), (255, 784007), (329, 607665), (357, 560005), (595, 336003), (705, 283577), (799, 250215), (987, 202555), (1645, 121533), (1785, 112001), (2383, 83895), (2397, 83405), (3995, 50043), (4935, 40511), (5593, 35745), (7149, 27965), (11915, 16779), (11985, 16681)]