81940060

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{6217}}^1$

素因数の和:6885

約数の個数: 24

約数和(自身を含む): 172362960

約数和(自身を除く): 90422900

約数列:

[1, 2, 4, 5, 10, 20, 659, 1318, 2636, 3295, 6217, 6590, 12434, 13180, 24868, 31085, 62170, 124340, 4097003, 8194006, 16388012, 20485015, 40970030, 81940060]

約数ペア:

[(1, 81940060), (2, 40970030), (4, 20485015), (5, 16388012), (10, 8194006), (20, 4097003), (659, 124340), (1318, 62170), (2636, 31085), (3295, 24868), (6217, 13180), (6590, 12434)]