21225875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 29652480

約数和(自身を除く): 8426605

約数列:

[1, 5, 11, 25, 43, 55, 125, 215, 275, 359, 473, 1075, 1375, 1795, 2365, 3949, 5375, 8975, 11825, 15437, 19745, 44875, 59125, 77185, 98725, 169807, 385925, 493625, 849035, 1929625, 4245175, 21225875]

約数ペア:

[(1, 21225875), (5, 4245175), (11, 1929625), (25, 849035), (43, 493625), (55, 385925), (125, 169807), (215, 98725), (275, 77185), (359, 59125), (473, 44875), (1075, 19745), (1375, 15437), (1795, 11825), (2365, 8975), (3949, 5375)]