215935551

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:338

約数の個数: 80

約数和(自身を含む): 375661440

約数和(自身を除く): 159725889

約数列:

[1, 3, 9, 13, 19, 27, 39, 43, 57, 81, 117, 129, 171, 247, 251, 351, 387, 513, 559, 741, 753, 817, 1053, 1161, 1539, 1677, 2223, 2259, 2451, 3263, 3483, 4769, 5031, 6669, 6777, 7353, 9789, 10621, 10793, 14307, 15093, 20007, 20331, 22059, 29367, 31863, 32379, 42921, 45279, 61997, 66177, 88101, 95589, 97137, 128763, 140309, 185991, 205067, 264303, 286767, 291411, 386289, 420927, 557973, 615201, 860301, 874233, 1262781, 1673919, 1845603, 2665871, 3788343, 5021757, 5536809, 7997613, 11365029, 16610427, 23992839, 71978517, 215935551]

約数ペア:

[(1, 215935551), (3, 71978517), (9, 23992839), (13, 16610427), (19, 11365029), (27, 7997613), (39, 5536809), (43, 5021757), (57, 3788343), (81, 2665871), (117, 1845603), (129, 1673919), (171, 1262781), (247, 874233), (251, 860301), (351, 615201), (387, 557973), (513, 420927), (559, 386289), (741, 291411), (753, 286767), (817, 264303), (1053, 205067), (1161, 185991), (1539, 140309), (1677, 128763), (2223, 97137), (2259, 95589), (2451, 88101), (3263, 66177), (3483, 61997), (4769, 45279), (5031, 42921), (6669, 32379), (6777, 31863), (7353, 29367), (9789, 22059), (10621, 20331), (10793, 20007), (14307, 15093)]