20161296280

素因数分解:

$2^3\times 5^1\times {\mathrm{1039}}^1\times {\mathrm{485113}}^1$

素因数の和:486163

約数の個数: 32

約数和(自身を含む): 45406670400

約数和(自身を除く): 25245374120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1039, 2078, 4156, 5195, 8312, 10390, 20780, 41560, 485113, 970226, 1940452, 2425565, 3880904, 4851130, 9702260, 19404520, 504032407, 1008064814, 2016129628, 2520162035, 4032259256, 5040324070, 10080648140, 20161296280]

約数ペア:

[(1, 20161296280), (2, 10080648140), (4, 5040324070), (5, 4032259256), (8, 2520162035), (10, 2016129628), (20, 1008064814), (40, 504032407), (1039, 19404520), (2078, 9702260), (4156, 4851130), (5195, 3880904), (8312, 2425565), (10390, 1940452), (20780, 970226), (41560, 485113)]