251951280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{149971}}^1$

素因数の和:149994

約数の個数: 80

約数和(自身を含む): 892633344

約数和(自身を除く): 640682064

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 149971, 299942, 449913, 599884, 749855, 899826, 1049797, 1199768, 1499710, 1799652, 2099594, 2249565, 2399536, 2999420, 3149391, 3599304, 4199188, 4499130, 5248985, 5998840, 6298782, 7198608, 8398376, 8998260, 10497970, 11997680, 12597564, 15746955, 16796752, 17996520, 20995940, 25195128, 31493910, 35993040, 41991880, 50390256, 62987820, 83983760, 125975640, 251951280]

約数ペア:

[(1, 251951280), (2, 125975640), (3, 83983760), (4, 62987820), (5, 50390256), (6, 41991880), (7, 35993040), (8, 31493910), (10, 25195128), (12, 20995940), (14, 17996520), (15, 16796752), (16, 15746955), (20, 12597564), (21, 11997680), (24, 10497970), (28, 8998260), (30, 8398376), (35, 7198608), (40, 6298782), (42, 5998840), (48, 5248985), (56, 4499130), (60, 4199188), (70, 3599304), (80, 3149391), (84, 2999420), (105, 2399536), (112, 2249565), (120, 2099594), (140, 1799652), (168, 1499710), (210, 1199768), (240, 1049797), (280, 899826), (336, 749855), (420, 599884), (560, 449913), (840, 299942), (1680, 149971)]