20949880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74821}}^1$

素因数の和:74839

約数の個数: 32

約数和(自身を含む): 53871840

約数和(自身を除く): 32921960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74821, 149642, 299284, 374105, 523747, 598568, 748210, 1047494, 1496420, 2094988, 2618735, 2992840, 4189976, 5237470, 10474940, 20949880]

約数ペア:

[(1, 20949880), (2, 10474940), (4, 5237470), (5, 4189976), (7, 2992840), (8, 2618735), (10, 2094988), (14, 1496420), (20, 1047494), (28, 748210), (35, 598568), (40, 523747), (56, 374105), (70, 299284), (140, 149642), (280, 74821)]