21438081

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3659}}^1$

素因数の和:3706

約数の個数: 32

約数和(自身を含む): 37478400

約数和(自身を除く): 16040319

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 93, 189, 217, 279, 651, 837, 1953, 3659, 5859, 10977, 25613, 32931, 76839, 98793, 113429, 230517, 340287, 691551, 794003, 1020861, 2382009, 3062583, 7146027, 21438081]

約数ペア:

[(1, 21438081), (3, 7146027), (7, 3062583), (9, 2382009), (21, 1020861), (27, 794003), (31, 691551), (63, 340287), (93, 230517), (189, 113429), (217, 98793), (279, 76839), (651, 32931), (837, 25613), (1953, 10977), (3659, 5859)]