21612875

素因数分解:

$5^3\times {\mathrm{43}}^1\times {\mathrm{4021}}^1$

素因数の和:4079

約数の個数: 16

約数和(自身を含む): 27607008

約数和(自身を除く): 5994133

約数列:

[1, 5, 25, 43, 125, 215, 1075, 4021, 5375, 20105, 100525, 172903, 502625, 864515, 4322575, 21612875]

約数ペア:

[(1, 21612875), (5, 4322575), (25, 864515), (43, 502625), (125, 172903), (215, 100525), (1075, 20105), (4021, 5375)]