21275556

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{521}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 51565248

約数和(自身を除く): 30289692

約数列:

[1, 2, 3, 4, 6, 12, 41, 82, 83, 123, 164, 166, 246, 249, 332, 492, 498, 521, 996, 1042, 1563, 2084, 3126, 3403, 6252, 6806, 10209, 13612, 20418, 21361, 40836, 42722, 43243, 64083, 85444, 86486, 128166, 129729, 172972, 256332, 259458, 518916, 1772963, 3545926, 5318889, 7091852, 10637778, 21275556]

約数ペア:

[(1, 21275556), (2, 10637778), (3, 7091852), (4, 5318889), (6, 3545926), (12, 1772963), (41, 518916), (82, 259458), (83, 256332), (123, 172972), (164, 129729), (166, 128166), (246, 86486), (249, 85444), (332, 64083), (492, 43243), (498, 42722), (521, 40836), (996, 21361), (1042, 20418), (1563, 13612), (2084, 10209), (3126, 6806), (3403, 6252)]