81230540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{3541}}^1$

素因数の和:3618

約数の個数: 48

約数和(自身を含む): 180897024

約数和(自身を除く): 99666484

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 310, 370, 620, 740, 1147, 2294, 3541, 4588, 5735, 7082, 11470, 14164, 17705, 22940, 35410, 70820, 109771, 131017, 219542, 262034, 439084, 524068, 548855, 655085, 1097710, 1310170, 2195420, 2620340, 4061527, 8123054, 16246108, 20307635, 40615270, 81230540]

約数ペア:

[(1, 81230540), (2, 40615270), (4, 20307635), (5, 16246108), (10, 8123054), (20, 4061527), (31, 2620340), (37, 2195420), (62, 1310170), (74, 1097710), (124, 655085), (148, 548855), (155, 524068), (185, 439084), (310, 262034), (370, 219542), (620, 131017), (740, 109771), (1147, 70820), (2294, 35410), (3541, 22940), (4588, 17705), (5735, 14164), (7082, 11470)]