19784648

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{677}}^1$

素因数の和:977

約数の個数: 32

約数和(自身を含む): 40151160

約数和(自身を除く): 20366512

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 281, 562, 677, 1124, 1354, 2248, 2708, 3653, 5416, 7306, 8801, 14612, 17602, 29224, 35204, 70408, 190237, 380474, 760948, 1521896, 2473081, 4946162, 9892324, 19784648]

約数ペア:

[(1, 19784648), (2, 9892324), (4, 4946162), (8, 2473081), (13, 1521896), (26, 760948), (52, 380474), (104, 190237), (281, 70408), (562, 35204), (677, 29224), (1124, 17602), (1354, 14612), (2248, 8801), (2708, 7306), (3653, 5416)]