991020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 2822400

約数和(自身を除く): 1831380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 83, 166, 199, 249, 332, 398, 415, 498, 597, 796, 830, 995, 996, 1194, 1245, 1660, 1990, 2388, 2490, 2985, 3980, 4980, 5970, 11940, 16517, 33034, 49551, 66068, 82585, 99102, 165170, 198204, 247755, 330340, 495510, 991020]

約数ペア:

[(1, 991020), (2, 495510), (3, 330340), (4, 247755), (5, 198204), (6, 165170), (10, 99102), (12, 82585), (15, 66068), (20, 49551), (30, 33034), (60, 16517), (83, 11940), (166, 5970), (199, 4980), (249, 3980), (332, 2985), (398, 2490), (415, 2388), (498, 1990), (597, 1660), (796, 1245), (830, 1194), (995, 996)]