81278930

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{111341}}^1$

素因数の和:111421

約数の個数: 16

約数和(自身を含む): 148307544

約数和(自身を除く): 67028614

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 111341, 222682, 556705, 1113410, 8127893, 16255786, 40639465, 81278930]

約数ペア:

[(1, 81278930), (2, 40639465), (5, 16255786), (10, 8127893), (73, 1113410), (146, 556705), (365, 222682), (730, 111341)]