21000978334

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{443939}}^1$

素因数の和:444088

約数の個数: 32

約数和(自身を含む): 37504051200

約数和(自身を除く): 16503072866

約数列:

[1, 2, 7, 14, 31, 62, 109, 217, 218, 434, 763, 1526, 3379, 6758, 23653, 47306, 443939, 887878, 3107573, 6215146, 13762109, 27524218, 48389351, 96334763, 96778702, 192669526, 338725457, 677450914, 1500069881, 3000139762, 10500489167, 21000978334]

約数ペア:

[(1, 21000978334), (2, 10500489167), (7, 3000139762), (14, 1500069881), (31, 677450914), (62, 338725457), (109, 192669526), (217, 96778702), (218, 96334763), (434, 48389351), (763, 27524218), (1526, 13762109), (3379, 6215146), (6758, 3107573), (23653, 887878), (47306, 443939)]