18881912

素因数分解:

$2^3\times 7^1\times {\mathrm{173}}^1\times {\mathrm{1949}}^1$

素因数の和:2135

約数の個数: 32

約数和(自身を含む): 40716000

約数和(自身を除く): 21834088

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 173, 346, 692, 1211, 1384, 1949, 2422, 3898, 4844, 7796, 9688, 13643, 15592, 27286, 54572, 109144, 337177, 674354, 1348708, 2360239, 2697416, 4720478, 9440956, 18881912]

約数ペア:

[(1, 18881912), (2, 9440956), (4, 4720478), (7, 2697416), (8, 2360239), (14, 1348708), (28, 674354), (56, 337177), (173, 109144), (346, 54572), (692, 27286), (1211, 15592), (1384, 13643), (1949, 9688), (2422, 7796), (3898, 4844)]