21248008

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{43541}}^1$

素因数の和:43608

約数の個数: 16

約数和(自身を含む): 40494060

約数和(自身を除く): 19246052

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 43541, 87082, 174164, 348328, 2656001, 5312002, 10624004, 21248008]

約数ペア:

[(1, 21248008), (2, 10624004), (4, 5312002), (8, 2656001), (61, 348328), (122, 174164), (244, 87082), (488, 43541)]