80988740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18661}}^1$

素因数の和:18708

約数の個数: 48

約数和(自身を含む): 200653824

約数和(自身を除く): 119665084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 18661, 37322, 74644, 93305, 130627, 186610, 261254, 373220, 522508, 578491, 653135, 1156982, 1306270, 2313964, 2612540, 2892455, 4049437, 5784910, 8098874, 11569820, 16197748, 20247185, 40494370, 80988740]

約数ペア:

[(1, 80988740), (2, 40494370), (4, 20247185), (5, 16197748), (7, 11569820), (10, 8098874), (14, 5784910), (20, 4049437), (28, 2892455), (31, 2612540), (35, 2313964), (62, 1306270), (70, 1156982), (124, 653135), (140, 578491), (155, 522508), (217, 373220), (310, 261254), (434, 186610), (620, 130627), (868, 93305), (1085, 74644), (2170, 37322), (4340, 18661)]