20164520

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1523}}^1$

素因数の和:1865

約数の個数: 32

約数和(自身を含む): 45537120

約数和(自身を除く): 25372600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1523, 1655, 2648, 3046, 3310, 6092, 6620, 7615, 12184, 13240, 15230, 30460, 60920, 504113, 1008226, 2016452, 2520565, 4032904, 5041130, 10082260, 20164520]

約数ペア:

[(1, 20164520), (2, 10082260), (4, 5041130), (5, 4032904), (8, 2520565), (10, 2016452), (20, 1008226), (40, 504113), (331, 60920), (662, 30460), (1324, 15230), (1523, 13240), (1655, 12184), (2648, 7615), (3046, 6620), (3310, 6092)]