21216426

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2417}}^1$

素因数の和:2459

約数の個数: 64

約数和(自身を含む): 55710720

約数和(自身を除く): 34494294

約数列:

[1, 2, 3, 6, 7, 11, 14, 19, 21, 22, 33, 38, 42, 57, 66, 77, 114, 133, 154, 209, 231, 266, 399, 418, 462, 627, 798, 1254, 1463, 2417, 2926, 4389, 4834, 7251, 8778, 14502, 16919, 26587, 33838, 45923, 50757, 53174, 79761, 91846, 101514, 137769, 159522, 186109, 275538, 321461, 372218, 505153, 558327, 642922, 964383, 1010306, 1116654, 1515459, 1928766, 3030918, 3536071, 7072142, 10608213, 21216426]

約数ペア:

[(1, 21216426), (2, 10608213), (3, 7072142), (6, 3536071), (7, 3030918), (11, 1928766), (14, 1515459), (19, 1116654), (21, 1010306), (22, 964383), (33, 642922), (38, 558327), (42, 505153), (57, 372218), (66, 321461), (77, 275538), (114, 186109), (133, 159522), (154, 137769), (209, 101514), (231, 91846), (266, 79761), (399, 53174), (418, 50757), (462, 45923), (627, 33838), (798, 26587), (1254, 16919), (1463, 14502), (2417, 8778), (2926, 7251), (4389, 4834)]