21126780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117371}}^1$

素因数の和:117386

約数の個数: 36

約数和(自身を含む): 64085112

約数和(自身を除く): 42958332

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117371, 234742, 352113, 469484, 586855, 704226, 1056339, 1173710, 1408452, 1760565, 2112678, 2347420, 3521130, 4225356, 5281695, 7042260, 10563390, 21126780]

約数ペア:

[(1, 21126780), (2, 10563390), (3, 7042260), (4, 5281695), (5, 4225356), (6, 3521130), (9, 2347420), (10, 2112678), (12, 1760565), (15, 1408452), (18, 1173710), (20, 1056339), (30, 704226), (36, 586855), (45, 469484), (60, 352113), (90, 234742), (180, 117371)]