642040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{2293}}^1$

素因数の和:2311

約数の個数: 32

約数和(自身を含む): 1651680

約数和(自身を除く): 1009640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 2293, 4586, 9172, 11465, 16051, 18344, 22930, 32102, 45860, 64204, 80255, 91720, 128408, 160510, 321020, 642040]

約数ペア:

[(1, 642040), (2, 321020), (4, 160510), (5, 128408), (7, 91720), (8, 80255), (10, 64204), (14, 45860), (20, 32102), (28, 22930), (35, 18344), (40, 16051), (56, 11465), (70, 9172), (140, 4586), (280, 2293)]