21985880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{337}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 56946240

約数和(自身を除く): 34960360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 233, 280, 337, 466, 674, 932, 1165, 1348, 1631, 1685, 1864, 2330, 2359, 2696, 3262, 3370, 4660, 4718, 6524, 6740, 8155, 9320, 9436, 11795, 13048, 13480, 16310, 18872, 23590, 32620, 47180, 65240, 78521, 94360, 157042, 314084, 392605, 549647, 628168, 785210, 1099294, 1570420, 2198588, 2748235, 3140840, 4397176, 5496470, 10992940, 21985880]

約数ペア:

[(1, 21985880), (2, 10992940), (4, 5496470), (5, 4397176), (7, 3140840), (8, 2748235), (10, 2198588), (14, 1570420), (20, 1099294), (28, 785210), (35, 628168), (40, 549647), (56, 392605), (70, 314084), (140, 157042), (233, 94360), (280, 78521), (337, 65240), (466, 47180), (674, 32620), (932, 23590), (1165, 18872), (1348, 16310), (1631, 13480), (1685, 13048), (1864, 11795), (2330, 9436), (2359, 9320), (2696, 8155), (3262, 6740), (3370, 6524), (4660, 4718)]