21466960

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{487}}^1$

素因数の和:548

約数の個数: 80

約数和(自身を含む): 54460800

約数和(自身を除く): 32993840

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 38, 40, 58, 76, 80, 95, 116, 145, 152, 190, 232, 290, 304, 380, 464, 487, 551, 580, 760, 974, 1102, 1160, 1520, 1948, 2204, 2320, 2435, 2755, 3896, 4408, 4870, 5510, 7792, 8816, 9253, 9740, 11020, 14123, 18506, 19480, 22040, 28246, 37012, 38960, 44080, 46265, 56492, 70615, 74024, 92530, 112984, 141230, 148048, 185060, 225968, 268337, 282460, 370120, 536674, 564920, 740240, 1073348, 1129840, 1341685, 2146696, 2683370, 4293392, 5366740, 10733480, 21466960]

約数ペア:

[(1, 21466960), (2, 10733480), (4, 5366740), (5, 4293392), (8, 2683370), (10, 2146696), (16, 1341685), (19, 1129840), (20, 1073348), (29, 740240), (38, 564920), (40, 536674), (58, 370120), (76, 282460), (80, 268337), (95, 225968), (116, 185060), (145, 148048), (152, 141230), (190, 112984), (232, 92530), (290, 74024), (304, 70615), (380, 56492), (464, 46265), (487, 44080), (551, 38960), (580, 37012), (760, 28246), (974, 22040), (1102, 19480), (1160, 18506), (1520, 14123), (1948, 11020), (2204, 9740), (2320, 9253), (2435, 8816), (2755, 7792), (3896, 5510), (4408, 4870)]