421580

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:313

約数の個数: 24

約数和(自身を含む): 898128

約数和(自身を除く): 476548

約数列:

[1, 2, 4, 5, 10, 20, 107, 197, 214, 394, 428, 535, 788, 985, 1070, 1970, 2140, 3940, 21079, 42158, 84316, 105395, 210790, 421580]

約数ペア:

[(1, 421580), (2, 210790), (4, 105395), (5, 84316), (10, 42158), (20, 21079), (107, 3940), (197, 2140), (214, 1970), (394, 1070), (428, 985), (535, 788)]