81088840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{289603}}^1$

素因数の和:289621

約数の個数: 32

約数和(自身を含む): 208514880

約数和(自身を除く): 127426040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 289603, 579206, 1158412, 1448015, 2027221, 2316824, 2896030, 4054442, 5792060, 8108884, 10136105, 11584120, 16217768, 20272210, 40544420, 81088840]

約数ペア:

[(1, 81088840), (2, 40544420), (4, 20272210), (5, 16217768), (7, 11584120), (8, 10136105), (10, 8108884), (14, 5792060), (20, 4054442), (28, 2896030), (35, 2316824), (40, 2027221), (56, 1448015), (70, 1158412), (140, 579206), (280, 289603)]