28340240

素因数分解:

$2^4\times 5^1\times {\mathrm{354253}}^1$

素因数の和:354266

約数の個数: 20

約数和(自身を含む): 65891244

約数和(自身を除く): 37551004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 354253, 708506, 1417012, 1771265, 2834024, 3542530, 5668048, 7085060, 14170120, 28340240]

約数ペア:

[(1, 28340240), (2, 14170120), (4, 7085060), (5, 5668048), (8, 3542530), (10, 2834024), (16, 1771265), (20, 1417012), (40, 708506), (80, 354253)]