21535640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76913}}^1$

素因数の和:76931

約数の個数: 32

約数和(自身を含む): 55378080

約数和(自身を除く): 33842440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76913, 153826, 307652, 384565, 538391, 615304, 769130, 1076782, 1538260, 2153564, 2691955, 3076520, 4307128, 5383910, 10767820, 21535640]

約数ペア:

[(1, 21535640), (2, 10767820), (4, 5383910), (5, 4307128), (7, 3076520), (8, 2691955), (10, 2153564), (14, 1538260), (20, 1076782), (28, 769130), (35, 615304), (40, 538391), (56, 384565), (70, 307652), (140, 153826), (280, 76913)]