21100916

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{191}}^1\times {\mathrm{389}}^1$

素因数の和:655

約数の個数: 24

約数和(自身を含む): 37739520

約数和(自身を除く): 16638604

約数列:

[1, 2, 4, 71, 142, 191, 284, 382, 389, 764, 778, 1556, 13561, 27122, 27619, 54244, 55238, 74299, 110476, 148598, 297196, 5275229, 10550458, 21100916]

約数ペア:

[(1, 21100916), (2, 10550458), (4, 5275229), (71, 297196), (142, 148598), (191, 110476), (284, 74299), (382, 55238), (389, 54244), (764, 27619), (778, 27122), (1556, 13561)]