20784972

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{277}}^1$

素因数の和:347

約数の個数: 72

約数和(自身を含む): 54129936

約数和(自身を除く): 33344964

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 37, 39, 52, 74, 78, 111, 148, 156, 169, 222, 277, 338, 444, 481, 507, 554, 676, 831, 962, 1014, 1108, 1443, 1662, 1924, 2028, 2886, 3324, 3601, 5772, 6253, 7202, 10249, 10803, 12506, 14404, 18759, 20498, 21606, 25012, 30747, 37518, 40996, 43212, 46813, 61494, 75036, 93626, 122988, 133237, 140439, 187252, 266474, 280878, 399711, 532948, 561756, 799422, 1598844, 1732081, 3464162, 5196243, 6928324, 10392486, 20784972]

約数ペア:

[(1, 20784972), (2, 10392486), (3, 6928324), (4, 5196243), (6, 3464162), (12, 1732081), (13, 1598844), (26, 799422), (37, 561756), (39, 532948), (52, 399711), (74, 280878), (78, 266474), (111, 187252), (148, 140439), (156, 133237), (169, 122988), (222, 93626), (277, 75036), (338, 61494), (444, 46813), (481, 43212), (507, 40996), (554, 37518), (676, 30747), (831, 25012), (962, 21606), (1014, 20498), (1108, 18759), (1443, 14404), (1662, 12506), (1924, 10803), (2028, 10249), (2886, 7202), (3324, 6253), (3601, 5772)]