256026710

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{18979}}^1$

素因数の和:19076

約数の個数: 32

約数和(自身を含む): 491961600

約数和(自身を除く): 235934890

約数列:

[1, 2, 5, 10, 19, 38, 71, 95, 142, 190, 355, 710, 1349, 2698, 6745, 13490, 18979, 37958, 94895, 189790, 360601, 721202, 1347509, 1803005, 2695018, 3606010, 6737545, 13475090, 25602671, 51205342, 128013355, 256026710]

約数ペア:

[(1, 256026710), (2, 128013355), (5, 51205342), (10, 25602671), (19, 13475090), (38, 6737545), (71, 3606010), (95, 2695018), (142, 1803005), (190, 1347509), (355, 721202), (710, 360601), (1349, 189790), (2698, 94895), (6745, 37958), (13490, 18979)]