21229828

素因数分解:

$2^2\times {\mathrm{23}}^2\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:256

約数の個数: 36

約数和(自身を含む): 39639040

約数和(自身を除く): 18409212

約数列:

[1, 2, 4, 23, 46, 79, 92, 127, 158, 254, 316, 508, 529, 1058, 1817, 2116, 2921, 3634, 5842, 7268, 10033, 11684, 20066, 40132, 41791, 67183, 83582, 134366, 167164, 230759, 268732, 461518, 923036, 5307457, 10614914, 21229828]

約数ペア:

[(1, 21229828), (2, 10614914), (4, 5307457), (23, 923036), (46, 461518), (79, 268732), (92, 230759), (127, 167164), (158, 134366), (254, 83582), (316, 67183), (508, 41791), (529, 40132), (1058, 20066), (1817, 11684), (2116, 10033), (2921, 7268), (3634, 5842)]