21359968

素因数分解:

$2^5\times 7^1\times {\mathrm{167}}^1\times {\mathrm{571}}^1$

素因数の和:755

約数の個数: 48

約数和(自身を含む): 48432384

約数和(自身を除く): 27072416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 167, 224, 334, 571, 668, 1142, 1169, 1336, 2284, 2338, 2672, 3997, 4568, 4676, 5344, 7994, 9136, 9352, 15988, 18272, 18704, 31976, 37408, 63952, 95357, 127904, 190714, 381428, 667499, 762856, 1334998, 1525712, 2669996, 3051424, 5339992, 10679984, 21359968]

約数ペア:

[(1, 21359968), (2, 10679984), (4, 5339992), (7, 3051424), (8, 2669996), (14, 1525712), (16, 1334998), (28, 762856), (32, 667499), (56, 381428), (112, 190714), (167, 127904), (224, 95357), (334, 63952), (571, 37408), (668, 31976), (1142, 18704), (1169, 18272), (1336, 15988), (2284, 9352), (2338, 9136), (2672, 7994), (3997, 5344), (4568, 4676)]