18780012

素因数分解:

$2^2\times 3^5\times {\mathrm{139}}^2$

素因数の和:297

約数の個数: 54

約数和(自身を含む): 49586628

約数和(自身を除く): 30806616

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 139, 162, 243, 278, 324, 417, 486, 556, 834, 972, 1251, 1668, 2502, 3753, 5004, 7506, 11259, 15012, 19321, 22518, 33777, 38642, 45036, 57963, 67554, 77284, 115926, 135108, 173889, 231852, 347778, 521667, 695556, 1043334, 1565001, 2086668, 3130002, 4695003, 6260004, 9390006, 18780012]

約数ペア:

[(1, 18780012), (2, 9390006), (3, 6260004), (4, 4695003), (6, 3130002), (9, 2086668), (12, 1565001), (18, 1043334), (27, 695556), (36, 521667), (54, 347778), (81, 231852), (108, 173889), (139, 135108), (162, 115926), (243, 77284), (278, 67554), (324, 57963), (417, 45036), (486, 38642), (556, 33777), (834, 22518), (972, 19321), (1251, 15012), (1668, 11259), (2502, 7506), (3753, 5004)]