199909160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1901}}^1$

素因数の和:2162

約数の個数: 64

約数和(自身を含む): 492998400

約数和(自身を除く): 293089240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 239, 440, 478, 956, 1195, 1901, 1912, 2390, 2629, 3802, 4780, 5258, 7604, 9505, 9560, 10516, 13145, 15208, 19010, 20911, 21032, 26290, 38020, 41822, 52580, 76040, 83644, 104555, 105160, 167288, 209110, 418220, 454339, 836440, 908678, 1817356, 2271695, 3634712, 4543390, 4997729, 9086780, 9995458, 18173560, 19990916, 24988645, 39981832, 49977290, 99954580, 199909160]

約数ペア:

[(1, 199909160), (2, 99954580), (4, 49977290), (5, 39981832), (8, 24988645), (10, 19990916), (11, 18173560), (20, 9995458), (22, 9086780), (40, 4997729), (44, 4543390), (55, 3634712), (88, 2271695), (110, 1817356), (220, 908678), (239, 836440), (440, 454339), (478, 418220), (956, 209110), (1195, 167288), (1901, 105160), (1912, 104555), (2390, 83644), (2629, 76040), (3802, 52580), (4780, 41822), (5258, 38020), (7604, 26290), (9505, 21032), (9560, 20911), (10516, 19010), (13145, 15208)]