21800740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{439}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 49674240

約数和(自身を除く): 27873500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 191, 260, 382, 439, 764, 878, 955, 1756, 1910, 2195, 2483, 3820, 4390, 4966, 5707, 8780, 9932, 11414, 12415, 22828, 24830, 28535, 49660, 57070, 83849, 114140, 167698, 335396, 419245, 838490, 1090037, 1676980, 2180074, 4360148, 5450185, 10900370, 21800740]

約数ペア:

[(1, 21800740), (2, 10900370), (4, 5450185), (5, 4360148), (10, 2180074), (13, 1676980), (20, 1090037), (26, 838490), (52, 419245), (65, 335396), (130, 167698), (191, 114140), (260, 83849), (382, 57070), (439, 49660), (764, 28535), (878, 24830), (955, 22828), (1756, 12415), (1910, 11414), (2195, 9932), (2483, 8780), (3820, 5707), (4390, 4966)]