21317390

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{31817}}^1$

素因数の和:31891

約数の個数: 16

約数和(自身を含む): 38945232

約数和(自身を除く): 17627842

約数列:

[1, 2, 5, 10, 67, 134, 335, 670, 31817, 63634, 159085, 318170, 2131739, 4263478, 10658695, 21317390]

約数ペア:

[(1, 21317390), (2, 10658695), (5, 4263478), (10, 2131739), (67, 318170), (134, 159085), (335, 63634), (670, 31817)]