643219640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{2297213}}^1$

素因数の和:2297231

約数の個数: 32

約数和(自身を含む): 1653994080

約数和(自身を除く): 1010774440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 2297213, 4594426, 9188852, 11486065, 16080491, 18377704, 22972130, 32160982, 45944260, 64321964, 80402455, 91888520, 128643928, 160804910, 321609820, 643219640]

約数ペア:

[(1, 643219640), (2, 321609820), (4, 160804910), (5, 128643928), (7, 91888520), (8, 80402455), (10, 64321964), (14, 45944260), (20, 32160982), (28, 22972130), (35, 18377704), (40, 16080491), (56, 11486065), (70, 9188852), (140, 4594426), (280, 2297213)]