20829968

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{281}}^1$

素因数の和:443

約数の個数: 40

約数和(自身を含む): 41856696

約数和(自身を除く): 21026728

約数列:

[1, 2, 4, 8, 16, 41, 82, 113, 164, 226, 281, 328, 452, 562, 656, 904, 1124, 1808, 2248, 4496, 4633, 9266, 11521, 18532, 23042, 31753, 37064, 46084, 63506, 74128, 92168, 127012, 184336, 254024, 508048, 1301873, 2603746, 5207492, 10414984, 20829968]

約数ペア:

[(1, 20829968), (2, 10414984), (4, 5207492), (8, 2603746), (16, 1301873), (41, 508048), (82, 254024), (113, 184336), (164, 127012), (226, 92168), (281, 74128), (328, 63506), (452, 46084), (562, 37064), (656, 31753), (904, 23042), (1124, 18532), (1808, 11521), (2248, 9266), (4496, 4633)]