28661913

素因数分解:

$3^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{631}}^1$

素因数の和:754

約数の個数: 36

約数和(自身を含む): 48704448

約数和(自身を除く): 20042535

約数列:

[1, 3, 7, 9, 21, 49, 63, 103, 147, 309, 441, 631, 721, 927, 1893, 2163, 4417, 5047, 5679, 6489, 13251, 15141, 30919, 39753, 45423, 64993, 92757, 194979, 278271, 454951, 584937, 1364853, 3184657, 4094559, 9553971, 28661913]

約数ペア:

[(1, 28661913), (3, 9553971), (7, 4094559), (9, 3184657), (21, 1364853), (49, 584937), (63, 454951), (103, 278271), (147, 194979), (309, 92757), (441, 64993), (631, 45423), (721, 39753), (927, 30919), (1893, 15141), (2163, 13251), (4417, 6489), (5047, 5679)]