81918538

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1193}}^1$

素因数の和:1366

約数の個数: 32

約数和(自身を含む): 140414400

約数和(自身を除く): 58495862

約数列:

[1, 2, 13, 19, 26, 38, 139, 247, 278, 494, 1193, 1807, 2386, 2641, 3614, 5282, 15509, 22667, 31018, 34333, 45334, 68666, 165827, 294671, 331654, 589342, 2155751, 3150713, 4311502, 6301426, 40959269, 81918538]

約数ペア:

[(1, 81918538), (2, 40959269), (13, 6301426), (19, 4311502), (26, 3150713), (38, 2155751), (139, 589342), (247, 331654), (278, 294671), (494, 165827), (1193, 68666), (1807, 45334), (2386, 34333), (2641, 31018), (3614, 22667), (5282, 15509)]