21472164

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{613}}^1$

素因数の和:769

約数の個数: 72

約数和(自身を含む): 62578880

約数和(自身を除く): 41106716

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 139, 252, 278, 417, 556, 613, 834, 973, 1226, 1251, 1668, 1839, 1946, 2452, 2502, 2919, 3678, 3892, 4291, 5004, 5517, 5838, 7356, 8582, 8757, 11034, 11676, 12873, 17164, 17514, 22068, 25746, 35028, 38619, 51492, 77238, 85207, 154476, 170414, 255621, 340828, 511242, 596449, 766863, 1022484, 1192898, 1533726, 1789347, 2385796, 3067452, 3578694, 5368041, 7157388, 10736082, 21472164]

約数ペア:

[(1, 21472164), (2, 10736082), (3, 7157388), (4, 5368041), (6, 3578694), (7, 3067452), (9, 2385796), (12, 1789347), (14, 1533726), (18, 1192898), (21, 1022484), (28, 766863), (36, 596449), (42, 511242), (63, 340828), (84, 255621), (126, 170414), (139, 154476), (252, 85207), (278, 77238), (417, 51492), (556, 38619), (613, 35028), (834, 25746), (973, 22068), (1226, 17514), (1251, 17164), (1668, 12873), (1839, 11676), (1946, 11034), (2452, 8757), (2502, 8582), (2919, 7356), (3678, 5838), (3892, 5517), (4291, 5004)]