21339784

素因数分解:

$2^3\times {\mathrm{557}}^1\times {\mathrm{4789}}^1$

素因数の和:5352

約数の個数: 16

約数和(自身を含む): 40092300

約数和(自身を除く): 18752516

約数列:

[1, 2, 4, 8, 557, 1114, 2228, 4456, 4789, 9578, 19156, 38312, 2667473, 5334946, 10669892, 21339784]

約数ペア:

[(1, 21339784), (2, 10669892), (4, 5334946), (8, 2667473), (557, 38312), (1114, 19156), (2228, 9578), (4456, 4789)]