21111910

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^2\times {\mathrm{199}}^1$

素因数の和:412

約数の個数: 24

約数和(自身を含む): 38566800

約数和(自身を除く): 17454890

約数列:

[1, 2, 5, 10, 103, 199, 206, 398, 515, 995, 1030, 1990, 10609, 20497, 21218, 40994, 53045, 102485, 106090, 204970, 2111191, 4222382, 10555955, 21111910]

約数ペア:

[(1, 21111910), (2, 10555955), (5, 4222382), (10, 2111191), (103, 204970), (199, 106090), (206, 102485), (398, 53045), (515, 40994), (995, 21218), (1030, 20497), (1990, 10609)]