21897712

素因数分解:

$2^4\times {\mathrm{821}}^1\times {\mathrm{1667}}^1$

素因数の和:2496

約数の個数: 20

約数和(自身を含む): 42503976

約数和(自身を除く): 20606264

約数列:

[1, 2, 4, 8, 16, 821, 1642, 1667, 3284, 3334, 6568, 6668, 13136, 13336, 26672, 1368607, 2737214, 5474428, 10948856, 21897712]

約数ペア:

[(1, 21897712), (2, 10948856), (4, 5474428), (8, 2737214), (16, 1368607), (821, 26672), (1642, 13336), (1667, 13136), (3284, 6668), (3334, 6568)]