4539740

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 10160640

約数和(自身を除く): 5620900

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 71, 92, 115, 139, 142, 230, 278, 284, 355, 460, 556, 695, 710, 1390, 1420, 1633, 2780, 3197, 3266, 6394, 6532, 8165, 9869, 12788, 15985, 16330, 19738, 31970, 32660, 39476, 49345, 63940, 98690, 197380, 226987, 453974, 907948, 1134935, 2269870, 4539740]

約数ペア:

[(1, 4539740), (2, 2269870), (4, 1134935), (5, 907948), (10, 453974), (20, 226987), (23, 197380), (46, 98690), (71, 63940), (92, 49345), (115, 39476), (139, 32660), (142, 31970), (230, 19738), (278, 16330), (284, 15985), (355, 12788), (460, 9869), (556, 8165), (695, 6532), (710, 6394), (1390, 3266), (1420, 3197), (1633, 2780)]