81688860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41257}}^1$

素因数の和:41283

約数の個数: 72

約数和(自身を含む): 270322416

約数和(自身を除く): 188633556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 41257, 82514, 123771, 165028, 206285, 247542, 371313, 412570, 453827, 495084, 618855, 742626, 825140, 907654, 1237710, 1361481, 1485252, 1815308, 1856565, 2269135, 2475420, 2722962, 3713130, 4084443, 4538270, 5445924, 6807405, 7426260, 8168886, 9076540, 13614810, 16337772, 20422215, 27229620, 40844430, 81688860]

約数ペア:

[(1, 81688860), (2, 40844430), (3, 27229620), (4, 20422215), (5, 16337772), (6, 13614810), (9, 9076540), (10, 8168886), (11, 7426260), (12, 6807405), (15, 5445924), (18, 4538270), (20, 4084443), (22, 3713130), (30, 2722962), (33, 2475420), (36, 2269135), (44, 1856565), (45, 1815308), (55, 1485252), (60, 1361481), (66, 1237710), (90, 907654), (99, 825140), (110, 742626), (132, 618855), (165, 495084), (180, 453827), (198, 412570), (220, 371313), (330, 247542), (396, 206285), (495, 165028), (660, 123771), (990, 82514), (1980, 41257)]