647169940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1903441}}^1$

素因数の和:1903467

約数の個数: 24

約数和(自身を含む): 1439002152

約数和(自身を除く): 791832212

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1903441, 3806882, 7613764, 9517205, 19034410, 32358497, 38068820, 64716994, 129433988, 161792485, 323584970, 647169940]

約数ペア:

[(1, 647169940), (2, 323584970), (4, 161792485), (5, 129433988), (10, 64716994), (17, 38068820), (20, 32358497), (34, 19034410), (68, 9517205), (85, 7613764), (170, 3806882), (340, 1903441)]