21008395

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 27102816

約数和(自身を除く): 6094421

約数列:

[1, 5, 19, 95, 103, 113, 361, 515, 565, 1805, 1957, 2147, 9785, 10735, 11639, 37183, 40793, 58195, 185915, 203965, 221141, 1105705, 4201679, 21008395]

約数ペア:

[(1, 21008395), (5, 4201679), (19, 1105705), (95, 221141), (103, 203965), (113, 185915), (361, 58195), (515, 40793), (565, 37183), (1805, 11639), (1957, 10735), (2147, 9785)]