18258316

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 35580160

約数和(自身を除く): 17321844

約数列:

[1, 2, 4, 19, 37, 38, 43, 74, 76, 86, 148, 151, 172, 302, 604, 703, 817, 1406, 1591, 1634, 2812, 2869, 3182, 3268, 5587, 5738, 6364, 6493, 11174, 11476, 12986, 22348, 25972, 30229, 60458, 106153, 120916, 123367, 212306, 240241, 246734, 424612, 480482, 493468, 960964, 4564579, 9129158, 18258316]

約数ペア:

[(1, 18258316), (2, 9129158), (4, 4564579), (19, 960964), (37, 493468), (38, 480482), (43, 424612), (74, 246734), (76, 240241), (86, 212306), (148, 123367), (151, 120916), (172, 106153), (302, 60458), (604, 30229), (703, 25972), (817, 22348), (1406, 12986), (1591, 11476), (1634, 11174), (2812, 6493), (2869, 6364), (3182, 5738), (3268, 5587)]