21347390

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{29243}}^1$

素因数の和:29323

約数の個数: 16

約数和(自身を含む): 38953008

約数和(自身を除く): 17605618

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 29243, 58486, 146215, 292430, 2134739, 4269478, 10673695, 21347390]

約数ペア:

[(1, 21347390), (2, 10673695), (5, 4269478), (10, 2134739), (73, 292430), (146, 146215), (365, 58486), (730, 29243)]