81761860

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1\times {\mathrm{353}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 177404976

約数和(自身を除く): 95643116

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 313, 353, 370, 626, 706, 740, 1252, 1412, 1565, 1765, 3130, 3530, 6260, 7060, 11581, 13061, 23162, 26122, 46324, 52244, 57905, 65305, 110489, 115810, 130610, 220978, 231620, 261220, 441956, 552445, 1104890, 2209780, 4088093, 8176186, 16352372, 20440465, 40880930, 81761860]

約数ペア:

[(1, 81761860), (2, 40880930), (4, 20440465), (5, 16352372), (10, 8176186), (20, 4088093), (37, 2209780), (74, 1104890), (148, 552445), (185, 441956), (313, 261220), (353, 231620), (370, 220978), (626, 130610), (706, 115810), (740, 110489), (1252, 65305), (1412, 57905), (1565, 52244), (1765, 46324), (3130, 26122), (3530, 23162), (6260, 13061), (7060, 11581)]