21821336

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{571}}^1$

素因数の和:875

約数の個数: 32

約数和(自身を含む): 43552080

約数和(自身を除く): 21730744

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 281, 562, 571, 1124, 1142, 2248, 2284, 4568, 4777, 9554, 9707, 19108, 19414, 38216, 38828, 77656, 160451, 320902, 641804, 1283608, 2727667, 5455334, 10910668, 21821336]

約数ペア:

[(1, 21821336), (2, 10910668), (4, 5455334), (8, 2727667), (17, 1283608), (34, 641804), (68, 320902), (136, 160451), (281, 77656), (562, 38828), (571, 38216), (1124, 19414), (1142, 19108), (2248, 9707), (2284, 9554), (4568, 4777)]