21211866

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{367}}^1$

素因数の和:420

約数の個数: 72

約数和(自身を含む): 52528320

約数和(自身を除く): 31316454

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 38, 39, 57, 78, 114, 117, 169, 171, 234, 247, 338, 342, 367, 494, 507, 734, 741, 1014, 1101, 1482, 1521, 2202, 2223, 3042, 3211, 3303, 4446, 4771, 6422, 6606, 6973, 9542, 9633, 13946, 14313, 19266, 20919, 28626, 28899, 41838, 42939, 57798, 62023, 62757, 85878, 90649, 124046, 125514, 181298, 186069, 271947, 372138, 543894, 558207, 815841, 1116414, 1178437, 1631682, 2356874, 3535311, 7070622, 10605933, 21211866]

約数ペア:

[(1, 21211866), (2, 10605933), (3, 7070622), (6, 3535311), (9, 2356874), (13, 1631682), (18, 1178437), (19, 1116414), (26, 815841), (38, 558207), (39, 543894), (57, 372138), (78, 271947), (114, 186069), (117, 181298), (169, 125514), (171, 124046), (234, 90649), (247, 85878), (338, 62757), (342, 62023), (367, 57798), (494, 42939), (507, 41838), (734, 28899), (741, 28626), (1014, 20919), (1101, 19266), (1482, 14313), (1521, 13946), (2202, 9633), (2223, 9542), (3042, 6973), (3211, 6606), (3303, 6422), (4446, 4771)]