21823640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{5297}}^1$

素因数の和:5411

約数の個数: 32

約数和(自身を含む): 49589280

約数和(自身を除く): 27765640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 5297, 10594, 21188, 26485, 42376, 52970, 105940, 211880, 545591, 1091182, 2182364, 2727955, 4364728, 5455910, 10911820, 21823640]

約数ペア:

[(1, 21823640), (2, 10911820), (4, 5455910), (5, 4364728), (8, 2727955), (10, 2182364), (20, 1091182), (40, 545591), (103, 211880), (206, 105940), (412, 52970), (515, 42376), (824, 26485), (1030, 21188), (2060, 10594), (4120, 5297)]