81500220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8543}}^1$

素因数の和:8611

約数の個数: 72

約数和(自身を含む): 251911296

約数和(自身を除く): 170411076

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 53, 60, 90, 106, 159, 180, 212, 265, 318, 477, 530, 636, 795, 954, 1060, 1590, 1908, 2385, 3180, 4770, 8543, 9540, 17086, 25629, 34172, 42715, 51258, 76887, 85430, 102516, 128145, 153774, 170860, 256290, 307548, 384435, 452779, 512580, 768870, 905558, 1358337, 1537740, 1811116, 2263895, 2716674, 4075011, 4527790, 5433348, 6791685, 8150022, 9055580, 13583370, 16300044, 20375055, 27166740, 40750110, 81500220]

約数ペア:

[(1, 81500220), (2, 40750110), (3, 27166740), (4, 20375055), (5, 16300044), (6, 13583370), (9, 9055580), (10, 8150022), (12, 6791685), (15, 5433348), (18, 4527790), (20, 4075011), (30, 2716674), (36, 2263895), (45, 1811116), (53, 1537740), (60, 1358337), (90, 905558), (106, 768870), (159, 512580), (180, 452779), (212, 384435), (265, 307548), (318, 256290), (477, 170860), (530, 153774), (636, 128145), (795, 102516), (954, 85430), (1060, 76887), (1590, 51258), (1908, 42715), (2385, 34172), (3180, 25629), (4770, 17086), (8543, 9540)]