81597320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{291419}}^1$

素因数の和:291437

約数の個数: 32

約数和(自身を含む): 209822400

約数和(自身を除く): 128225080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 291419, 582838, 1165676, 1457095, 2039933, 2331352, 2914190, 4079866, 5828380, 8159732, 10199665, 11656760, 16319464, 20399330, 40798660, 81597320]

約数ペア:

[(1, 81597320), (2, 40798660), (4, 20399330), (5, 16319464), (7, 11656760), (8, 10199665), (10, 8159732), (14, 5828380), (20, 4079866), (28, 2914190), (35, 2331352), (40, 2039933), (56, 1457095), (70, 1165676), (140, 582838), (280, 291419)]