21199654

素因数分解:

$2^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{1579}}^1$

素因数の和:1732

約数の個数: 24

約数和(自身を含む): 37284840

約数和(自身を除く): 16085186

約数列:

[1, 2, 7, 14, 49, 98, 137, 274, 959, 1579, 1918, 3158, 6713, 11053, 13426, 22106, 77371, 154742, 216323, 432646, 1514261, 3028522, 10599827, 21199654]

約数ペア:

[(1, 21199654), (2, 10599827), (7, 3028522), (14, 1514261), (49, 432646), (98, 216323), (137, 154742), (274, 77371), (959, 22106), (1579, 13426), (1918, 11053), (3158, 6713)]