3978380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 9662016

約数和(自身を除く): 5683636

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 181, 314, 362, 628, 724, 785, 905, 1099, 1267, 1570, 1810, 2198, 2534, 3140, 3620, 4396, 5068, 5495, 6335, 10990, 12670, 21980, 25340, 28417, 56834, 113668, 142085, 198919, 284170, 397838, 568340, 795676, 994595, 1989190, 3978380]

約数ペア:

[(1, 3978380), (2, 1989190), (4, 994595), (5, 795676), (7, 568340), (10, 397838), (14, 284170), (20, 198919), (28, 142085), (35, 113668), (70, 56834), (140, 28417), (157, 25340), (181, 21980), (314, 12670), (362, 10990), (628, 6335), (724, 5495), (785, 5068), (905, 4396), (1099, 3620), (1267, 3140), (1570, 2534), (1810, 2198)]