21374888

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{43801}}^1$

素因数の和:43868

約数の個数: 16

約数和(自身を含む): 40735860

約数和(自身を除く): 19360972

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 43801, 87602, 175204, 350408, 2671861, 5343722, 10687444, 21374888]

約数ペア:

[(1, 21374888), (2, 10687444), (4, 5343722), (8, 2671861), (61, 350408), (122, 175204), (244, 87602), (488, 43801)]