28657910

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{42773}}^1$

素因数の和:42847

約数の個数: 16

約数和(自身を含む): 52355376

約数和(自身を除く): 23697466

約数列:

[1, 2, 5, 10, 67, 134, 335, 670, 42773, 85546, 213865, 427730, 2865791, 5731582, 14328955, 28657910]

約数ペア:

[(1, 28657910), (2, 14328955), (5, 5731582), (10, 2865791), (67, 427730), (134, 213865), (335, 85546), (670, 42773)]