21110870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:341

約数の個数: 48

約数和(自身を含む): 42517440

約数和(自身を除く): 21406570

約数列:

[1, 2, 5, 10, 11, 22, 55, 73, 110, 121, 146, 239, 242, 365, 478, 605, 730, 803, 1195, 1210, 1606, 2390, 2629, 4015, 5258, 8030, 8833, 13145, 17447, 17666, 26290, 28919, 34894, 44165, 57838, 87235, 88330, 144595, 174470, 191917, 289190, 383834, 959585, 1919170, 2111087, 4222174, 10555435, 21110870]

約数ペア:

[(1, 21110870), (2, 10555435), (5, 4222174), (10, 2111087), (11, 1919170), (22, 959585), (55, 383834), (73, 289190), (110, 191917), (121, 174470), (146, 144595), (239, 88330), (242, 87235), (365, 57838), (478, 44165), (605, 34894), (730, 28919), (803, 26290), (1195, 17666), (1210, 17447), (1606, 13145), (2390, 8833), (2629, 8030), (4015, 5258)]