81839240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{292283}}^1$

素因数の和:292301

約数の個数: 32

約数和(自身を含む): 210444480

約数和(自身を除く): 128605240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 292283, 584566, 1169132, 1461415, 2045981, 2338264, 2922830, 4091962, 5845660, 8183924, 10229905, 11691320, 16367848, 20459810, 40919620, 81839240]

約数ペア:

[(1, 81839240), (2, 40919620), (4, 20459810), (5, 16367848), (7, 11691320), (8, 10229905), (10, 8183924), (14, 5845660), (20, 4091962), (28, 2922830), (35, 2338264), (40, 2045981), (56, 1461415), (70, 1169132), (140, 584566), (280, 292283)]