18665720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15053}}^1$

素因数の和:15095

約数の個数: 32

約数和(自身を含む): 43355520

約数和(自身を除く): 24689800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15053, 30106, 60212, 75265, 120424, 150530, 301060, 466643, 602120, 933286, 1866572, 2333215, 3733144, 4666430, 9332860, 18665720]

約数ペア:

[(1, 18665720), (2, 9332860), (4, 4666430), (5, 3733144), (8, 2333215), (10, 1866572), (20, 933286), (31, 602120), (40, 466643), (62, 301060), (124, 150530), (155, 120424), (248, 75265), (310, 60212), (620, 30106), (1240, 15053)]