221288260

素因数分解:

$2^2\times 5^1\times {\mathrm{2129}}^1\times {\mathrm{5197}}^1$

素因数の和:7335

約数の個数: 24

約数和(自身を含む): 465013080

約数和(自身を除く): 243724820

約数列:

[1, 2, 4, 5, 10, 20, 2129, 4258, 5197, 8516, 10394, 10645, 20788, 21290, 25985, 42580, 51970, 103940, 11064413, 22128826, 44257652, 55322065, 110644130, 221288260]

約数ペア:

[(1, 221288260), (2, 110644130), (4, 55322065), (5, 44257652), (10, 22128826), (20, 11064413), (2129, 103940), (4258, 51970), (5197, 42580), (8516, 25985), (10394, 21290), (10645, 20788)]