19876720

素因数分解:

$2^4\times 5^1\times {\mathrm{367}}^1\times {\mathrm{677}}^1$

素因数の和:1057

約数の個数: 40

約数和(自身を含む): 46407744

約数和(自身を除く): 26531024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 367, 677, 734, 1354, 1468, 1835, 2708, 2936, 3385, 3670, 5416, 5872, 6770, 7340, 10832, 13540, 14680, 27080, 29360, 54160, 248459, 496918, 993836, 1242295, 1987672, 2484590, 3975344, 4969180, 9938360, 19876720]

約数ペア:

[(1, 19876720), (2, 9938360), (4, 4969180), (5, 3975344), (8, 2484590), (10, 1987672), (16, 1242295), (20, 993836), (40, 496918), (80, 248459), (367, 54160), (677, 29360), (734, 27080), (1354, 14680), (1468, 13540), (1835, 10832), (2708, 7340), (2936, 6770), (3385, 5872), (3670, 5416)]