20806484000

素因数分解:

$2^5\times 5^3\times {\mathrm{5201621}}^1$

素因数の和:5201646

約数の個数: 48

約数和(自身を含む): 51121541016

約数和(自身を除く): 30315057016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 5201621, 10403242, 20806484, 26008105, 41612968, 52016210, 83225936, 104032420, 130040525, 166451872, 208064840, 260081050, 416129680, 520162100, 650202625, 832259360, 1040324200, 1300405250, 2080648400, 2600810500, 4161296800, 5201621000, 10403242000, 20806484000]

約数ペア:

[(1, 20806484000), (2, 10403242000), (4, 5201621000), (5, 4161296800), (8, 2600810500), (10, 2080648400), (16, 1300405250), (20, 1040324200), (25, 832259360), (32, 650202625), (40, 520162100), (50, 416129680), (80, 260081050), (100, 208064840), (125, 166451872), (160, 130040525), (200, 104032420), (250, 83225936), (400, 52016210), (500, 41612968), (800, 26008105), (1000, 20806484), (2000, 10403242), (4000, 5201621)]