2173820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 5122656

約数和(自身を除く): 2948836

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 241, 410, 451, 482, 820, 902, 964, 1205, 1804, 2255, 2410, 2651, 4510, 4820, 5302, 9020, 9881, 10604, 13255, 19762, 26510, 39524, 49405, 53020, 98810, 108691, 197620, 217382, 434764, 543455, 1086910, 2173820]

約数ペア:

[(1, 2173820), (2, 1086910), (4, 543455), (5, 434764), (10, 217382), (11, 197620), (20, 108691), (22, 98810), (41, 53020), (44, 49405), (55, 39524), (82, 26510), (110, 19762), (164, 13255), (205, 10604), (220, 9881), (241, 9020), (410, 5302), (451, 4820), (482, 4510), (820, 2651), (902, 2410), (964, 2255), (1205, 1804)]