21872132

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{1223}}^1$

素因数の和:1507

約数の個数: 24

約数和(自身を含む): 40715136

約数和(自身を除く): 18843004

約数列:

[1, 2, 4, 17, 34, 68, 263, 526, 1052, 1223, 2446, 4471, 4892, 8942, 17884, 20791, 41582, 83164, 321649, 643298, 1286596, 5468033, 10936066, 21872132]

約数ペア:

[(1, 21872132), (2, 10936066), (4, 5468033), (17, 1286596), (34, 643298), (68, 321649), (263, 83164), (526, 41582), (1052, 20791), (1223, 17884), (2446, 8942), (4471, 4892)]