81021564

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4679}}^1$

素因数の和:4739

約数の個数: 72

約数和(自身を含む): 226568160

約数和(自身を除く): 145546596

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 37, 39, 52, 74, 78, 111, 117, 148, 156, 222, 234, 333, 444, 468, 481, 666, 962, 1332, 1443, 1924, 2886, 4329, 4679, 5772, 8658, 9358, 14037, 17316, 18716, 28074, 42111, 56148, 60827, 84222, 121654, 168444, 173123, 182481, 243308, 346246, 364962, 519369, 547443, 692492, 729924, 1038738, 1094886, 1558107, 2077476, 2189772, 2250599, 3116214, 4501198, 6232428, 6751797, 9002396, 13503594, 20255391, 27007188, 40510782, 81021564]

約数ペア:

[(1, 81021564), (2, 40510782), (3, 27007188), (4, 20255391), (6, 13503594), (9, 9002396), (12, 6751797), (13, 6232428), (18, 4501198), (26, 3116214), (36, 2250599), (37, 2189772), (39, 2077476), (52, 1558107), (74, 1094886), (78, 1038738), (111, 729924), (117, 692492), (148, 547443), (156, 519369), (222, 364962), (234, 346246), (333, 243308), (444, 182481), (468, 173123), (481, 168444), (666, 121654), (962, 84222), (1332, 60827), (1443, 56148), (1924, 42111), (2886, 28074), (4329, 18716), (4679, 17316), (5772, 14037), (8658, 9358)]