17981820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{353}}^1$

素因数の和:651

約数の個数: 72

約数和(自身を含む): 54892656

約数和(自身を除く): 36910836

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 283, 353, 566, 706, 849, 1059, 1132, 1412, 1415, 1698, 1765, 2118, 2547, 2830, 3177, 3396, 3530, 4236, 4245, 5094, 5295, 5660, 6354, 7060, 8490, 10188, 10590, 12708, 12735, 15885, 16980, 21180, 25470, 31770, 50940, 63540, 99899, 199798, 299697, 399596, 499495, 599394, 899091, 998990, 1198788, 1498485, 1798182, 1997980, 2996970, 3596364, 4495455, 5993940, 8990910, 17981820]

約数ペア:

[(1, 17981820), (2, 8990910), (3, 5993940), (4, 4495455), (5, 3596364), (6, 2996970), (9, 1997980), (10, 1798182), (12, 1498485), (15, 1198788), (18, 998990), (20, 899091), (30, 599394), (36, 499495), (45, 399596), (60, 299697), (90, 199798), (180, 99899), (283, 63540), (353, 50940), (566, 31770), (706, 25470), (849, 21180), (1059, 16980), (1132, 15885), (1412, 12735), (1415, 12708), (1698, 10590), (1765, 10188), (2118, 8490), (2547, 7060), (2830, 6354), (3177, 5660), (3396, 5295), (3530, 5094), (4236, 4245)]