80810420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1951}}^1$

素因数の和:2088

約数の個数: 48

約数和(自身を含む): 180364800

約数和(自身を除く): 99554380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 1090, 1951, 2071, 2180, 3902, 4142, 7804, 8284, 9755, 10355, 19510, 20710, 37069, 39020, 41420, 74138, 148276, 185345, 212659, 370690, 425318, 741380, 850636, 1063295, 2126590, 4040521, 4253180, 8081042, 16162084, 20202605, 40405210, 80810420]

約数ペア:

[(1, 80810420), (2, 40405210), (4, 20202605), (5, 16162084), (10, 8081042), (19, 4253180), (20, 4040521), (38, 2126590), (76, 1063295), (95, 850636), (109, 741380), (190, 425318), (218, 370690), (380, 212659), (436, 185345), (545, 148276), (1090, 74138), (1951, 41420), (2071, 39020), (2180, 37069), (3902, 20710), (4142, 19510), (7804, 10355), (8284, 9755)]