21640640

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{9661}}^1$

素因数の和:9685

約数の個数: 56

約数和(自身を含む): 58899552

約数和(自身を除く): 37258912

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 9661, 19322, 38644, 48305, 67627, 77288, 96610, 135254, 154576, 193220, 270508, 309152, 338135, 386440, 541016, 618304, 676270, 772880, 1082032, 1352540, 1545760, 2164064, 2705080, 3091520, 4328128, 5410160, 10820320, 21640640]

約数ペア:

[(1, 21640640), (2, 10820320), (4, 5410160), (5, 4328128), (7, 3091520), (8, 2705080), (10, 2164064), (14, 1545760), (16, 1352540), (20, 1082032), (28, 772880), (32, 676270), (35, 618304), (40, 541016), (56, 386440), (64, 338135), (70, 309152), (80, 270508), (112, 193220), (140, 154576), (160, 135254), (224, 96610), (280, 77288), (320, 67627), (448, 48305), (560, 38644), (1120, 19322), (2240, 9661)]