21306532

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 21029468

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 71, 116, 142, 199, 284, 377, 398, 754, 796, 923, 1508, 1846, 2059, 2587, 3692, 4118, 5174, 5771, 8236, 10348, 11542, 14129, 23084, 26767, 28258, 53534, 56516, 75023, 107068, 150046, 183677, 300092, 367354, 409741, 734708, 819482, 1638964, 5326633, 10653266, 21306532]

約数ペア:

[(1, 21306532), (2, 10653266), (4, 5326633), (13, 1638964), (26, 819482), (29, 734708), (52, 409741), (58, 367354), (71, 300092), (116, 183677), (142, 150046), (199, 107068), (284, 75023), (377, 56516), (398, 53534), (754, 28258), (796, 26767), (923, 23084), (1508, 14129), (1846, 11542), (2059, 10348), (2587, 8236), (3692, 5771), (4118, 5174)]