19980636

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{487}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 50502144

約数和(自身を除く): 30521508

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 263, 487, 526, 789, 974, 1052, 1461, 1578, 1948, 2922, 3156, 3419, 5844, 6331, 6838, 10257, 12662, 13676, 18993, 20514, 25324, 37986, 41028, 75972, 128081, 256162, 384243, 512324, 768486, 1536972, 1665053, 3330106, 4995159, 6660212, 9990318, 19980636]

約数ペア:

[(1, 19980636), (2, 9990318), (3, 6660212), (4, 4995159), (6, 3330106), (12, 1665053), (13, 1536972), (26, 768486), (39, 512324), (52, 384243), (78, 256162), (156, 128081), (263, 75972), (487, 41028), (526, 37986), (789, 25324), (974, 20514), (1052, 18993), (1461, 13676), (1578, 12662), (1948, 10257), (2922, 6838), (3156, 6331), (3419, 5844)]