21484990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{857}}^1$

素因数の和:996

約数の個数: 32

約数和(自身を含む): 40772160

約数和(自身を除く): 19287170

約数列:

[1, 2, 5, 10, 23, 46, 109, 115, 218, 230, 545, 857, 1090, 1714, 2507, 4285, 5014, 8570, 12535, 19711, 25070, 39422, 93413, 98555, 186826, 197110, 467065, 934130, 2148499, 4296998, 10742495, 21484990]

約数ペア:

[(1, 21484990), (2, 10742495), (5, 4296998), (10, 2148499), (23, 934130), (46, 467065), (109, 197110), (115, 186826), (218, 98555), (230, 93413), (545, 39422), (857, 25070), (1090, 19711), (1714, 12535), (2507, 8570), (4285, 5014)]