16899880

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1033}}^1$

素因数の和:1453

約数の個数: 32

約数和(自身を含む): 38154600

約数和(自身を除く): 21254720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1033, 1636, 2045, 2066, 3272, 4090, 4132, 5165, 8180, 8264, 10330, 16360, 20660, 41320, 422497, 844994, 1689988, 2112485, 3379976, 4224970, 8449940, 16899880]

約数ペア:

[(1, 16899880), (2, 8449940), (4, 4224970), (5, 3379976), (8, 2112485), (10, 1689988), (20, 844994), (40, 422497), (409, 41320), (818, 20660), (1033, 16360), (1636, 10330), (2045, 8264), (2066, 8180), (3272, 5165), (4090, 4132)]