21420448

素因数分解:

$2^5\times 7^2\times {\mathrm{19}}^1\times {\mathrm{719}}^1$

素因数の和:762

約数の個数: 72

約数和(自身を含む): 51710400

約数和(自身を除く): 30289952

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 49, 56, 76, 98, 112, 133, 152, 196, 224, 266, 304, 392, 532, 608, 719, 784, 931, 1064, 1438, 1568, 1862, 2128, 2876, 3724, 4256, 5033, 5752, 7448, 10066, 11504, 13661, 14896, 20132, 23008, 27322, 29792, 35231, 40264, 54644, 70462, 80528, 95627, 109288, 140924, 161056, 191254, 218576, 281848, 382508, 437152, 563696, 669389, 765016, 1127392, 1338778, 1530032, 2677556, 3060064, 5355112, 10710224, 21420448]

約数ペア:

[(1, 21420448), (2, 10710224), (4, 5355112), (7, 3060064), (8, 2677556), (14, 1530032), (16, 1338778), (19, 1127392), (28, 765016), (32, 669389), (38, 563696), (49, 437152), (56, 382508), (76, 281848), (98, 218576), (112, 191254), (133, 161056), (152, 140924), (196, 109288), (224, 95627), (266, 80528), (304, 70462), (392, 54644), (532, 40264), (608, 35231), (719, 29792), (784, 27322), (931, 23008), (1064, 20132), (1438, 14896), (1568, 13661), (1862, 11504), (2128, 10066), (2876, 7448), (3724, 5752), (4256, 5033)]