217888940

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{149239}}^1$

素因数の和:149321

約数の個数: 24

約数和(自身を含む): 463837920

約数和(自身を除く): 245948980

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 149239, 298478, 596956, 746195, 1492390, 2984780, 10894447, 21788894, 43577788, 54472235, 108944470, 217888940]

約数ペア:

[(1, 217888940), (2, 108944470), (4, 54472235), (5, 43577788), (10, 21788894), (20, 10894447), (73, 2984780), (146, 1492390), (292, 746195), (365, 596956), (730, 298478), (1460, 149239)]