21807884

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 23914996

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 107, 116, 203, 214, 251, 406, 428, 502, 749, 812, 1004, 1498, 1757, 2996, 3103, 3514, 6206, 7028, 7279, 12412, 14558, 21721, 26857, 29116, 43442, 50953, 53714, 86884, 101906, 107428, 187999, 203812, 375998, 751996, 778853, 1557706, 3115412, 5451971, 10903942, 21807884]

約数ペア:

[(1, 21807884), (2, 10903942), (4, 5451971), (7, 3115412), (14, 1557706), (28, 778853), (29, 751996), (58, 375998), (107, 203812), (116, 187999), (203, 107428), (214, 101906), (251, 86884), (406, 53714), (428, 50953), (502, 43442), (749, 29116), (812, 26857), (1004, 21721), (1498, 14558), (1757, 12412), (2996, 7279), (3103, 7028), (3514, 6206)]