21304640

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{9511}}^1$

素因数の和:9535

約数の個数: 56

約数和(自身を含む): 57985152

約数和(自身を除く): 36680512

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, 9511, 19022, 38044, 47555, 66577, 76088, 95110, 133154, 152176, 190220, 266308, 304352, 332885, 380440, 532616, 608704, 665770, 760880, 1065232, 1331540, 1521760, 2130464, 2663080, 3043520, 4260928, 5326160, 10652320, 21304640]

約数ペア:

[(1, 21304640), (2, 10652320), (4, 5326160), (5, 4260928), (7, 3043520), (8, 2663080), (10, 2130464), (14, 1521760), (16, 1331540), (20, 1065232), (28, 760880), (32, 665770), (35, 608704), (40, 532616), (56, 380440), (64, 332885), (70, 304352), (80, 266308), (112, 190220), (140, 152176), (160, 133154), (224, 95110), (280, 76088), (320, 66577), (448, 47555), (560, 38044), (1120, 19022), (2240, 9511)]