21084084

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{167}}^2$

素因数の和:354

約数の個数: 72

約数和(自身を含む): 62847680

約数和(自身を除く): 41763596

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 167, 189, 252, 334, 378, 501, 668, 756, 1002, 1169, 1503, 2004, 2338, 3006, 3507, 4509, 4676, 6012, 7014, 9018, 10521, 14028, 18036, 21042, 27889, 31563, 42084, 55778, 63126, 83667, 111556, 126252, 167334, 195223, 251001, 334668, 390446, 502002, 585669, 753003, 780892, 1004004, 1171338, 1506006, 1757007, 2342676, 3012012, 3514014, 5271021, 7028028, 10542042, 21084084]

約数ペア:

[(1, 21084084), (2, 10542042), (3, 7028028), (4, 5271021), (6, 3514014), (7, 3012012), (9, 2342676), (12, 1757007), (14, 1506006), (18, 1171338), (21, 1004004), (27, 780892), (28, 753003), (36, 585669), (42, 502002), (54, 390446), (63, 334668), (84, 251001), (108, 195223), (126, 167334), (167, 126252), (189, 111556), (252, 83667), (334, 63126), (378, 55778), (501, 42084), (668, 31563), (756, 27889), (1002, 21042), (1169, 18036), (1503, 14028), (2004, 10521), (2338, 9018), (3006, 7014), (3507, 6012), (4509, 4676)]