71288890

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{54419}}^1$

素因数の和:54557

約数の個数: 16

約数和(自身を含む): 129301920

約数和(自身を除く): 58013030

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 54419, 108838, 272095, 544190, 7128889, 14257778, 35644445, 71288890]

約数ペア:

[(1, 71288890), (2, 35644445), (5, 14257778), (10, 7128889), (131, 544190), (262, 272095), (655, 108838), (1310, 54419)]