20984240

素因数分解:

$2^4\times 5^1\times {\mathrm{262303}}^1$

素因数の和:262316

約数の個数: 20

約数和(自身を含む): 48788544

約数和(自身を除く): 27804304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262303, 524606, 1049212, 1311515, 2098424, 2623030, 4196848, 5246060, 10492120, 20984240]

約数ペア:

[(1, 20984240), (2, 10492120), (4, 5246060), (5, 4196848), (8, 2623030), (10, 2098424), (16, 1311515), (20, 1049212), (40, 524606), (80, 262303)]