18850640

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2333}}^1$

素因数の和:2447

約数の個数: 40

約数和(自身を含む): 44280648

約数和(自身を除く): 25430008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2333, 4040, 4666, 8080, 9332, 11665, 18664, 23330, 37328, 46660, 93320, 186640, 235633, 471266, 942532, 1178165, 1885064, 2356330, 3770128, 4712660, 9425320, 18850640]

約数ペア:

[(1, 18850640), (2, 9425320), (4, 4712660), (5, 3770128), (8, 2356330), (10, 1885064), (16, 1178165), (20, 942532), (40, 471266), (80, 235633), (101, 186640), (202, 93320), (404, 46660), (505, 37328), (808, 23330), (1010, 18664), (1616, 11665), (2020, 9332), (2333, 8080), (4040, 4666)]