21000224

素因数分解:

$2^5\times 7^2\times {\mathrm{59}}^1\times {\mathrm{227}}^1$

素因数の和:310

約数の個数: 72

約数和(自身を含む): 49124880

約数和(自身を除く): 28124656

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 59, 98, 112, 118, 196, 224, 227, 236, 392, 413, 454, 472, 784, 826, 908, 944, 1568, 1589, 1652, 1816, 1888, 2891, 3178, 3304, 3632, 5782, 6356, 6608, 7264, 11123, 11564, 12712, 13216, 13393, 22246, 23128, 25424, 26786, 44492, 46256, 50848, 53572, 88984, 92512, 93751, 107144, 177968, 187502, 214288, 355936, 375004, 428576, 656257, 750008, 1312514, 1500016, 2625028, 3000032, 5250056, 10500112, 21000224]

約数ペア:

[(1, 21000224), (2, 10500112), (4, 5250056), (7, 3000032), (8, 2625028), (14, 1500016), (16, 1312514), (28, 750008), (32, 656257), (49, 428576), (56, 375004), (59, 355936), (98, 214288), (112, 187502), (118, 177968), (196, 107144), (224, 93751), (227, 92512), (236, 88984), (392, 53572), (413, 50848), (454, 46256), (472, 44492), (784, 26786), (826, 25424), (908, 23128), (944, 22246), (1568, 13393), (1589, 13216), (1652, 12712), (1816, 11564), (1888, 11123), (2891, 7264), (3178, 6608), (3304, 6356), (3632, 5782)]