20853890

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{15919}}^1$

素因数の和:16057

約数の個数: 16

約数和(自身を含む): 37825920

約数和(自身を除く): 16972030

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 15919, 31838, 79595, 159190, 2085389, 4170778, 10426945, 20853890]

約数ペア:

[(1, 20853890), (2, 10426945), (5, 4170778), (10, 2085389), (131, 159190), (262, 79595), (655, 31838), (1310, 15919)]