21195378

素因数分解:

$2^1\times 3^3\times {\mathrm{83}}^1\times {\mathrm{4729}}^1$

素因数の和:4823

約数の個数: 32

約数和(自身を含む): 47678400

約数和(自身を除く): 26483022

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 83, 166, 249, 498, 747, 1494, 2241, 4482, 4729, 9458, 14187, 28374, 42561, 85122, 127683, 255366, 392507, 785014, 1177521, 2355042, 3532563, 7065126, 10597689, 21195378]

約数ペア:

[(1, 21195378), (2, 10597689), (3, 7065126), (6, 3532563), (9, 2355042), (18, 1177521), (27, 785014), (54, 392507), (83, 255366), (166, 127683), (249, 85122), (498, 42561), (747, 28374), (1494, 14187), (2241, 9458), (4482, 4729)]