21428428

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{857}}^1$

素因数の和:934

約数の個数: 48

約数和(自身を含む): 46126080

約数和(自身を除く): 24697652

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 47, 76, 94, 133, 188, 266, 329, 532, 658, 857, 893, 1316, 1714, 1786, 3428, 3572, 5999, 6251, 11998, 12502, 16283, 23996, 25004, 32566, 40279, 65132, 80558, 113981, 161116, 227962, 281953, 455924, 563906, 765301, 1127812, 1530602, 3061204, 5357107, 10714214, 21428428]

約数ペア:

[(1, 21428428), (2, 10714214), (4, 5357107), (7, 3061204), (14, 1530602), (19, 1127812), (28, 765301), (38, 563906), (47, 455924), (76, 281953), (94, 227962), (133, 161116), (188, 113981), (266, 80558), (329, 65132), (532, 40279), (658, 32566), (857, 25004), (893, 23996), (1316, 16283), (1714, 12502), (1786, 11998), (3428, 6251), (3572, 5999)]