18896900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:485

約数の個数: 72

約数和(自身を含む): 45934560

約数和(自身を除く): 27037660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 41, 44, 50, 55, 82, 100, 110, 164, 205, 220, 275, 410, 419, 451, 550, 820, 838, 902, 1025, 1100, 1676, 1804, 2050, 2095, 2255, 4100, 4190, 4510, 4609, 8380, 9020, 9218, 10475, 11275, 17179, 18436, 20950, 22550, 23045, 34358, 41900, 45100, 46090, 68716, 85895, 92180, 115225, 171790, 188969, 230450, 343580, 377938, 429475, 460900, 755876, 858950, 944845, 1717900, 1889690, 3779380, 4724225, 9448450, 18896900]

約数ペア:

[(1, 18896900), (2, 9448450), (4, 4724225), (5, 3779380), (10, 1889690), (11, 1717900), (20, 944845), (22, 858950), (25, 755876), (41, 460900), (44, 429475), (50, 377938), (55, 343580), (82, 230450), (100, 188969), (110, 171790), (164, 115225), (205, 92180), (220, 85895), (275, 68716), (410, 46090), (419, 45100), (451, 41900), (550, 34358), (820, 23045), (838, 22550), (902, 20950), (1025, 18436), (1100, 17179), (1676, 11275), (1804, 10475), (2050, 9218), (2095, 9020), (2255, 8380), (4100, 4609), (4190, 4510)]