18054820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4447}}^1$

素因数の和:4492

約数の個数: 48

約数和(自身を含む): 44835840

約数和(自身を除く): 26781020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4447, 8894, 17788, 22235, 31129, 44470, 62258, 88940, 124516, 128963, 155645, 257926, 311290, 515852, 622580, 644815, 902741, 1289630, 1805482, 2579260, 3610964, 4513705, 9027410, 18054820]

約数ペア:

[(1, 18054820), (2, 9027410), (4, 4513705), (5, 3610964), (7, 2579260), (10, 1805482), (14, 1289630), (20, 902741), (28, 644815), (29, 622580), (35, 515852), (58, 311290), (70, 257926), (116, 155645), (140, 128963), (145, 124516), (203, 88940), (290, 62258), (406, 44470), (580, 31129), (812, 22235), (1015, 17788), (2030, 8894), (4060, 4447)]