21411640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{5197}}^1$

素因数の和:5311

約数の個数: 32

約数和(自身を含む): 48653280

約数和(自身を除く): 27241640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 5197, 10394, 20788, 25985, 41576, 51970, 103940, 207880, 535291, 1070582, 2141164, 2676455, 4282328, 5352910, 10705820, 21411640]

約数ペア:

[(1, 21411640), (2, 10705820), (4, 5352910), (5, 4282328), (8, 2676455), (10, 2141164), (20, 1070582), (40, 535291), (103, 207880), (206, 103940), (412, 51970), (515, 41576), (824, 25985), (1030, 20788), (2060, 10394), (4120, 5197)]