80457865520

素因数分解:

$2^4\times 5^1\times {\mathrm{2131}}^1\times {\mathrm{471949}}^1$

素因数の和:474093

約数の個数: 40

約数和(自身を含む): 187152716400

約数和(自身を除く): 106694850880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2131, 4262, 8524, 10655, 17048, 21310, 34096, 42620, 85240, 170480, 471949, 943898, 1887796, 2359745, 3775592, 4719490, 7551184, 9438980, 18877960, 37755920, 1005723319, 2011446638, 4022893276, 5028616595, 8045786552, 10057233190, 16091573104, 20114466380, 40228932760, 80457865520]

約数ペア:

[(1, 80457865520), (2, 40228932760), (4, 20114466380), (5, 16091573104), (8, 10057233190), (10, 8045786552), (16, 5028616595), (20, 4022893276), (40, 2011446638), (80, 1005723319), (2131, 37755920), (4262, 18877960), (8524, 9438980), (10655, 7551184), (17048, 4719490), (21310, 3775592), (34096, 2359745), (42620, 1887796), (85240, 943898), (170480, 471949)]