21393998

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{263}}^1\times {\mathrm{457}}^1$

素因数の和:811

約数の個数: 16

約数和(自身を含む): 32646240

約数和(自身を除く): 11252242

約数列:

[1, 2, 89, 178, 263, 457, 526, 914, 23407, 40673, 46814, 81346, 120191, 240382, 10696999, 21393998]

約数ペア:

[(1, 21393998), (2, 10696999), (89, 240382), (178, 120191), (263, 81346), (457, 46814), (526, 40673), (914, 23407)]