20821996

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{2237}}^1$

素因数の和:2433

約数の個数: 24

約数和(自身を含む): 39478320

約数和(自身を除く): 18656324

約数列:

[1, 2, 4, 13, 26, 52, 179, 358, 716, 2237, 2327, 4474, 4654, 8948, 9308, 29081, 58162, 116324, 400423, 800846, 1601692, 5205499, 10410998, 20821996]

約数ペア:

[(1, 20821996), (2, 10410998), (4, 5205499), (13, 1601692), (26, 800846), (52, 400423), (179, 116324), (358, 58162), (716, 29081), (2237, 9308), (2327, 8948), (4474, 4654)]