21399836

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{241}}^1\times {\mathrm{281}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 38216640

約数和(自身を除く): 16816804

約数列:

[1, 2, 4, 79, 158, 241, 281, 316, 482, 562, 964, 1124, 19039, 22199, 38078, 44398, 67721, 76156, 88796, 135442, 270884, 5349959, 10699918, 21399836]

約数ペア:

[(1, 21399836), (2, 10699918), (4, 5349959), (79, 270884), (158, 135442), (241, 88796), (281, 76156), (316, 67721), (482, 44398), (562, 38078), (964, 22199), (1124, 19039)]