187697180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{20809}}^1$

素因数の和:20870

約数の個数: 48

約数和(自身を含む): 440506080

約数和(自身を除く): 252808900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 4510, 9020, 20809, 41618, 83236, 104045, 208090, 228899, 416180, 457798, 853169, 915596, 1144495, 1706338, 2288990, 3412676, 4265845, 4577980, 8531690, 9384859, 17063380, 18769718, 37539436, 46924295, 93848590, 187697180]

約数ペア:

[(1, 187697180), (2, 93848590), (4, 46924295), (5, 37539436), (10, 18769718), (11, 17063380), (20, 9384859), (22, 8531690), (41, 4577980), (44, 4265845), (55, 3412676), (82, 2288990), (110, 1706338), (164, 1144495), (205, 915596), (220, 853169), (410, 457798), (451, 416180), (820, 228899), (902, 208090), (1804, 104045), (2255, 83236), (4510, 41618), (9020, 20809)]