21515290

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{29473}}^1$

素因数の和:29553

約数の個数: 16

約数和(自身を含む): 39259368

約数和(自身を除く): 17744078

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 29473, 58946, 147365, 294730, 2151529, 4303058, 10757645, 21515290]

約数ペア:

[(1, 21515290), (2, 10757645), (5, 4303058), (10, 2151529), (73, 294730), (146, 147365), (365, 58946), (730, 29473)]