257127892

素因数分解:

$2^2\times 7^4\times {\mathrm{41}}^1\times {\mathrm{653}}^1$

素因数の和:726

約数の個数: 60

約数和(自身を含む): 538565076

約数和(自身を除く): 281437184

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 343, 574, 653, 686, 1148, 1306, 1372, 2009, 2401, 2612, 4018, 4571, 4802, 8036, 9142, 9604, 14063, 18284, 26773, 28126, 31997, 53546, 56252, 63994, 98441, 107092, 127988, 187411, 196882, 223979, 374822, 393764, 447958, 749644, 895916, 1311877, 1567853, 2623754, 3135706, 5247508, 6271412, 9183139, 18366278, 36732556, 64281973, 128563946, 257127892]

約数ペア:

[(1, 257127892), (2, 128563946), (4, 64281973), (7, 36732556), (14, 18366278), (28, 9183139), (41, 6271412), (49, 5247508), (82, 3135706), (98, 2623754), (164, 1567853), (196, 1311877), (287, 895916), (343, 749644), (574, 447958), (653, 393764), (686, 374822), (1148, 223979), (1306, 196882), (1372, 187411), (2009, 127988), (2401, 107092), (2612, 98441), (4018, 63994), (4571, 56252), (4802, 53546), (8036, 31997), (9142, 28126), (9604, 26773), (14063, 18284)]