20781607690

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5197}}^1\times {\mathrm{4493}}^1$

素因数の和:9786

約数の個数: 32

約数和(自身を含む): 37842895440

約数和(自身を除く): 17061287750

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 4493, 5197, 8986, 10394, 22465, 25985, 44930, 51970, 399877, 462533, 799754, 925066, 1999385, 2312665, 3998770, 4625330, 23350121, 46700242, 116750605, 233501210, 2078160769, 4156321538, 10390803845, 20781607690]

約数ペア:

[(1, 20781607690), (2, 10390803845), (5, 4156321538), (10, 2078160769), (89, 233501210), (178, 116750605), (445, 46700242), (890, 23350121), (4493, 4625330), (5197, 3998770), (8986, 2312665), (10394, 1999385), (22465, 925066), (25985, 799754), (44930, 462533), (51970, 399877)]