20951560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74827}}^1$

素因数の和:74845

約数の個数: 32

約数和(自身を含む): 53876160

約数和(自身を除く): 32924600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74827, 149654, 299308, 374135, 523789, 598616, 748270, 1047578, 1496540, 2095156, 2618945, 2993080, 4190312, 5237890, 10475780, 20951560]

約数ペア:

[(1, 20951560), (2, 10475780), (4, 5237890), (5, 4190312), (7, 2993080), (8, 2618945), (10, 2095156), (14, 1496540), (20, 1047578), (28, 748270), (35, 598616), (40, 523789), (56, 374135), (70, 299308), (140, 149654), (280, 74827)]