31521880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{4663}}^1$

素因数の和:4700

約数の個数: 48

約数和(自身を含む): 76816080

約数和(自身を除く): 45294200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 3380, 4663, 6760, 9326, 18652, 23315, 37304, 46630, 60619, 93260, 121238, 186520, 242476, 303095, 484952, 606190, 788047, 1212380, 1576094, 2424760, 3152188, 3940235, 6304376, 7880470, 15760940, 31521880]

約数ペア:

[(1, 31521880), (2, 15760940), (4, 7880470), (5, 6304376), (8, 3940235), (10, 3152188), (13, 2424760), (20, 1576094), (26, 1212380), (40, 788047), (52, 606190), (65, 484952), (104, 303095), (130, 242476), (169, 186520), (260, 121238), (338, 93260), (520, 60619), (676, 46630), (845, 37304), (1352, 23315), (1690, 18652), (3380, 9326), (4663, 6760)]