18978484

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2617}}^1$

素因数の和:2672

約数の個数: 36

約数和(自身を含む): 39694116

約数和(自身を除く): 20715632

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 518, 1036, 1813, 2617, 3626, 5234, 7252, 10468, 18319, 36638, 73276, 96829, 128233, 193658, 256466, 387316, 512932, 677803, 1355606, 2711212, 4744621, 9489242, 18978484]

約数ペア:

[(1, 18978484), (2, 9489242), (4, 4744621), (7, 2711212), (14, 1355606), (28, 677803), (37, 512932), (49, 387316), (74, 256466), (98, 193658), (148, 128233), (196, 96829), (259, 73276), (518, 36638), (1036, 18319), (1813, 10468), (2617, 7252), (3626, 5234)]