21145654

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{1987}}^1$

素因数の和:2319

約数の個数: 16

約数和(自身を含む): 33708528

約数和(自身を除く): 12562874

約数列:

[1, 2, 17, 34, 313, 626, 1987, 3974, 5321, 10642, 33779, 67558, 621931, 1243862, 10572827, 21145654]

約数ペア:

[(1, 21145654), (2, 10572827), (17, 1243862), (34, 621931), (313, 67558), (626, 33779), (1987, 10642), (3974, 5321)]