21239402

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{5113}}^1$

素因数の和:5213

約数の個数: 16

約数和(自身を含む): 33384192

約数和(自身を除く): 12144790

約数列:

[1, 2, 31, 62, 67, 134, 2077, 4154, 5113, 10226, 158503, 317006, 342571, 685142, 10619701, 21239402]

約数ペア:

[(1, 21239402), (2, 10619701), (31, 685142), (62, 342571), (67, 317006), (134, 158503), (2077, 10226), (4154, 5113)]