21998585

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 31629312

約数和(自身を除く): 9630727

約数列:

[1, 5, 7, 35, 43, 47, 215, 235, 301, 311, 329, 1505, 1555, 1645, 2021, 2177, 10105, 10885, 13373, 14147, 14617, 66865, 70735, 73085, 93611, 102319, 468055, 511595, 628531, 3142655, 4399717, 21998585]

約数ペア:

[(1, 21998585), (5, 4399717), (7, 3142655), (35, 628531), (43, 511595), (47, 468055), (215, 102319), (235, 93611), (301, 73085), (311, 70735), (329, 66865), (1505, 14617), (1555, 14147), (1645, 13373), (2021, 10885), (2177, 10105)]