20128760

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{1201}}^1$

素因数の和:1631

約数の個数: 32

約数和(自身を含む): 45435600

約数和(自身を除く): 25306840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1201, 1676, 2095, 2402, 3352, 4190, 4804, 6005, 8380, 9608, 12010, 16760, 24020, 48040, 503219, 1006438, 2012876, 2516095, 4025752, 5032190, 10064380, 20128760]

約数ペア:

[(1, 20128760), (2, 10064380), (4, 5032190), (5, 4025752), (8, 2516095), (10, 2012876), (20, 1006438), (40, 503219), (419, 48040), (838, 24020), (1201, 16760), (1676, 12010), (2095, 9608), (2402, 8380), (3352, 6005), (4190, 4804)]