20862855

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1877}}^1$

素因数の和:1920

約数の個数: 48

約数和(自身を含む): 41015520

約数和(自身を除く): 20152665

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 247, 285, 585, 741, 855, 1235, 1877, 2223, 3705, 5631, 9385, 11115, 16893, 24401, 28155, 35663, 73203, 84465, 106989, 122005, 178315, 219609, 320967, 366015, 463619, 534945, 1098045, 1390857, 1604835, 2318095, 4172571, 6954285, 20862855]

約数ペア:

[(1, 20862855), (3, 6954285), (5, 4172571), (9, 2318095), (13, 1604835), (15, 1390857), (19, 1098045), (39, 534945), (45, 463619), (57, 366015), (65, 320967), (95, 219609), (117, 178315), (171, 122005), (195, 106989), (247, 84465), (285, 73203), (585, 35663), (741, 28155), (855, 24401), (1235, 16893), (1877, 11115), (2223, 9385), (3705, 5631)]