21252490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4159}}^1$

素因数の和:4246

約数の個数: 32

約数和(自身を含む): 44328960

約数和(自身を除く): 23076470

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 73, 146, 365, 511, 730, 1022, 2555, 4159, 5110, 8318, 20795, 29113, 41590, 58226, 145565, 291130, 303607, 607214, 1518035, 2125249, 3036070, 4250498, 10626245, 21252490]

約数ペア:

[(1, 21252490), (2, 10626245), (5, 4250498), (7, 3036070), (10, 2125249), (14, 1518035), (35, 607214), (70, 303607), (73, 291130), (146, 145565), (365, 58226), (511, 41590), (730, 29113), (1022, 20795), (2555, 8318), (4159, 5110)]