18653720

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2861}}^1$

素因数の和:3035

約数の個数: 32

約数和(自身を含む): 42243120

約数和(自身を除く): 23589400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 2861, 3260, 5722, 6520, 11444, 14305, 22888, 28610, 57220, 114440, 466343, 932686, 1865372, 2331715, 3730744, 4663430, 9326860, 18653720]

約数ペア:

[(1, 18653720), (2, 9326860), (4, 4663430), (5, 3730744), (8, 2331715), (10, 1865372), (20, 932686), (40, 466343), (163, 114440), (326, 57220), (652, 28610), (815, 22888), (1304, 14305), (1630, 11444), (2861, 6520), (3260, 5722)]