19811888

素因数分解:

$2^4\times {\mathrm{397}}^1\times {\mathrm{3119}}^1$

素因数の和:3524

約数の個数: 20

約数和(自身を含む): 38494560

約数和(自身を除く): 18682672

約数列:

[1, 2, 4, 8, 16, 397, 794, 1588, 3119, 3176, 6238, 6352, 12476, 24952, 49904, 1238243, 2476486, 4952972, 9905944, 19811888]

約数ペア:

[(1, 19811888), (2, 9905944), (4, 4952972), (8, 2476486), (16, 1238243), (397, 49904), (794, 24952), (1588, 12476), (3119, 6352), (3176, 6238)]