217338380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1552417}}^1$

素因数の和:1552433

約数の個数: 24

約数和(自身を含む): 521612448

約数和(自身を除く): 304274068

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1552417, 3104834, 6209668, 7762085, 10866919, 15524170, 21733838, 31048340, 43467676, 54334595, 108669190, 217338380]

約数ペア:

[(1, 217338380), (2, 108669190), (4, 54334595), (5, 43467676), (7, 31048340), (10, 21733838), (14, 15524170), (20, 10866919), (28, 7762085), (35, 6209668), (70, 3104834), (140, 1552417)]