21616360

素因数分解:

$2^3\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1231}}^1$

素因数の和:1681

約数の個数: 32

約数和(自身を含む): 48787200

約数和(自身を除く): 27170840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 439, 878, 1231, 1756, 2195, 2462, 3512, 4390, 4924, 6155, 8780, 9848, 12310, 17560, 24620, 49240, 540409, 1080818, 2161636, 2702045, 4323272, 5404090, 10808180, 21616360]

約数ペア:

[(1, 21616360), (2, 10808180), (4, 5404090), (5, 4323272), (8, 2702045), (10, 2161636), (20, 1080818), (40, 540409), (439, 49240), (878, 24620), (1231, 17560), (1756, 12310), (2195, 9848), (2462, 8780), (3512, 6155), (4390, 4924)]