18895408

素因数分解:

$2^4\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1493}}^1$

素因数の和:1621

約数の個数: 40

約数和(自身を含む): 42238368

約数和(自身を除く): 23342960

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 113, 226, 452, 791, 904, 1493, 1582, 1808, 2986, 3164, 5972, 6328, 10451, 11944, 12656, 20902, 23888, 41804, 83608, 167216, 168709, 337418, 674836, 1180963, 1349672, 2361926, 2699344, 4723852, 9447704, 18895408]

約数ペア:

[(1, 18895408), (2, 9447704), (4, 4723852), (7, 2699344), (8, 2361926), (14, 1349672), (16, 1180963), (28, 674836), (56, 337418), (112, 168709), (113, 167216), (226, 83608), (452, 41804), (791, 23888), (904, 20902), (1493, 12656), (1582, 11944), (1808, 10451), (2986, 6328), (3164, 5972)]