30871640

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{7213}}^1$

素因数の和:7331

約数の個数: 32

約数和(自身を含む): 70120080

約数和(自身を除く): 39248440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 7213, 14426, 28852, 36065, 57704, 72130, 144260, 288520, 771791, 1543582, 3087164, 3858955, 6174328, 7717910, 15435820, 30871640]

約数ペア:

[(1, 30871640), (2, 15435820), (4, 7717910), (5, 6174328), (8, 3858955), (10, 3087164), (20, 1543582), (40, 771791), (107, 288520), (214, 144260), (428, 72130), (535, 57704), (856, 36065), (1070, 28852), (2140, 14426), (4280, 7213)]