21063125

素因数分解:

$5^4\times {\mathrm{67}}^1\times {\mathrm{503}}^1$

素因数の和:590

約数の個数: 20

約数和(自身を含む): 26766432

約数和(自身を除く): 5703307

約数列:

[1, 5, 25, 67, 125, 335, 503, 625, 1675, 2515, 8375, 12575, 33701, 41875, 62875, 168505, 314375, 842525, 4212625, 21063125]

約数ペア:

[(1, 21063125), (5, 4212625), (25, 842525), (67, 314375), (125, 168505), (335, 62875), (503, 41875), (625, 33701), (1675, 12575), (2515, 8375)]