31845880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{461}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 78835680

約数和(自身を除く): 46989800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 157, 220, 314, 440, 461, 628, 785, 922, 1256, 1570, 1727, 1844, 2305, 3140, 3454, 3688, 4610, 5071, 6280, 6908, 8635, 9220, 10142, 13816, 17270, 18440, 20284, 25355, 34540, 40568, 50710, 69080, 72377, 101420, 144754, 202840, 289508, 361885, 579016, 723770, 796147, 1447540, 1592294, 2895080, 3184588, 3980735, 6369176, 7961470, 15922940, 31845880]

約数ペア:

[(1, 31845880), (2, 15922940), (4, 7961470), (5, 6369176), (8, 3980735), (10, 3184588), (11, 2895080), (20, 1592294), (22, 1447540), (40, 796147), (44, 723770), (55, 579016), (88, 361885), (110, 289508), (157, 202840), (220, 144754), (314, 101420), (440, 72377), (461, 69080), (628, 50710), (785, 40568), (922, 34540), (1256, 25355), (1570, 20284), (1727, 18440), (1844, 17270), (2305, 13816), (3140, 10142), (3454, 9220), (3688, 8635), (4610, 6908), (5071, 6280)]