21380378

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1\times {\mathrm{1013}}^1$

素因数の和:1249

約数の個数: 16

約数和(自身を含む): 32817096

約数和(自身を除く): 11436718

約数列:

[1, 2, 61, 122, 173, 346, 1013, 2026, 10553, 21106, 61793, 123586, 175249, 350498, 10690189, 21380378]

約数ペア:

[(1, 21380378), (2, 10690189), (61, 350498), (122, 175249), (173, 123586), (346, 61793), (1013, 21106), (2026, 10553)]