21654205

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{2213}}^1$

素因数の和:2340

約数の個数: 16

約数和(自身を含む): 27630720

約数和(自身を除く): 5976515

約数列:

[1, 5, 19, 95, 103, 515, 1957, 2213, 9785, 11065, 42047, 210235, 227939, 1139695, 4330841, 21654205]

約数ペア:

[(1, 21654205), (5, 4330841), (19, 1139695), (95, 227939), (103, 210235), (515, 42047), (1957, 11065), (2213, 9785)]