19594820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2089}}^1$

素因数の和:2172

約数の個数: 48

約数和(自身を含む): 47752320

約数和(自身を除く): 28157500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2089, 2345, 4178, 4690, 8356, 9380, 10445, 14623, 20890, 29246, 41780, 58492, 73115, 139963, 146230, 279926, 292460, 559852, 699815, 979741, 1399630, 1959482, 2799260, 3918964, 4898705, 9797410, 19594820]

約数ペア:

[(1, 19594820), (2, 9797410), (4, 4898705), (5, 3918964), (7, 2799260), (10, 1959482), (14, 1399630), (20, 979741), (28, 699815), (35, 559852), (67, 292460), (70, 279926), (134, 146230), (140, 139963), (268, 73115), (335, 58492), (469, 41780), (670, 29246), (938, 20890), (1340, 14623), (1876, 10445), (2089, 9380), (2345, 8356), (4178, 4690)]