21263983

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:271

約数の個数: 24

約数和(自身を含む): 25347168

約数和(自身を除く): 4083185

約数列:

[1, 13, 19, 23, 197, 247, 299, 361, 437, 2561, 3743, 4531, 4693, 5681, 8303, 48659, 58903, 71117, 86089, 107939, 924521, 1119157, 1635691, 21263983]

約数ペア:

[(1, 21263983), (13, 1635691), (19, 1119157), (23, 924521), (197, 107939), (247, 86089), (299, 71117), (361, 58903), (437, 48659), (2561, 8303), (3743, 5681), (4531, 4693)]