257403412

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{11801}}^1$

素因数の和:11872

約数の個数: 48

約数和(自身を含む): 555166080

約数和(自身を除く): 297762668

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 41, 76, 82, 133, 164, 266, 287, 532, 574, 779, 1148, 1558, 3116, 5453, 10906, 11801, 21812, 23602, 47204, 82607, 165214, 224219, 330428, 448438, 483841, 896876, 967682, 1569533, 1935364, 3139066, 3386887, 6278132, 6773774, 9192979, 13547548, 18385958, 36771916, 64350853, 128701706, 257403412]

約数ペア:

[(1, 257403412), (2, 128701706), (4, 64350853), (7, 36771916), (14, 18385958), (19, 13547548), (28, 9192979), (38, 6773774), (41, 6278132), (76, 3386887), (82, 3139066), (133, 1935364), (164, 1569533), (266, 967682), (287, 896876), (532, 483841), (574, 448438), (779, 330428), (1148, 224219), (1558, 165214), (3116, 82607), (5453, 47204), (10906, 23602), (11801, 21812)]