21546520

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2791}}^1$

素因数の和:2995

約数の個数: 32

約数和(自身を含む): 48748320

約数和(自身を除く): 27201800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 2791, 3860, 5582, 7720, 11164, 13955, 22328, 27910, 55820, 111640, 538663, 1077326, 2154652, 2693315, 4309304, 5386630, 10773260, 21546520]

約数ペア:

[(1, 21546520), (2, 10773260), (4, 5386630), (5, 4309304), (8, 2693315), (10, 2154652), (20, 1077326), (40, 538663), (193, 111640), (386, 55820), (772, 27910), (965, 22328), (1544, 13955), (1930, 11164), (2791, 7720), (3860, 5582)]