18970864

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:310

約数の個数: 60

約数和(自身を含む): 41559840

約数和(自身を除く): 22588976

約数列:

[1, 2, 4, 8, 11, 16, 22, 41, 44, 82, 88, 121, 164, 176, 239, 242, 328, 451, 478, 484, 656, 902, 956, 968, 1804, 1912, 1936, 2629, 3608, 3824, 4961, 5258, 7216, 9799, 9922, 10516, 19598, 19844, 21032, 28919, 39196, 39688, 42064, 57838, 78392, 79376, 107789, 115676, 156784, 215578, 231352, 431156, 462704, 862312, 1185679, 1724624, 2371358, 4742716, 9485432, 18970864]

約数ペア:

[(1, 18970864), (2, 9485432), (4, 4742716), (8, 2371358), (11, 1724624), (16, 1185679), (22, 862312), (41, 462704), (44, 431156), (82, 231352), (88, 215578), (121, 156784), (164, 115676), (176, 107789), (239, 79376), (242, 78392), (328, 57838), (451, 42064), (478, 39688), (484, 39196), (656, 28919), (902, 21032), (956, 19844), (968, 19598), (1804, 10516), (1912, 9922), (1936, 9799), (2629, 7216), (3608, 5258), (3824, 4961)]