81102780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{40961}}^1$

素因数の和:40987

約数の個数: 72

約数和(自身を含む): 268383024

約数和(自身を除く): 187280244

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, 40961, 81922, 122883, 163844, 204805, 245766, 368649, 409610, 450571, 491532, 614415, 737298, 819220, 901142, 1228830, 1351713, 1474596, 1802284, 1843245, 2252855, 2457660, 2703426, 3686490, 4055139, 4505710, 5406852, 6758565, 7372980, 8110278, 9011420, 13517130, 16220556, 20275695, 27034260, 40551390, 81102780]

約数ペア:

[(1, 81102780), (2, 40551390), (3, 27034260), (4, 20275695), (5, 16220556), (6, 13517130), (9, 9011420), (10, 8110278), (11, 7372980), (12, 6758565), (15, 5406852), (18, 4505710), (20, 4055139), (22, 3686490), (30, 2703426), (33, 2457660), (36, 2252855), (44, 1843245), (45, 1802284), (55, 1474596), (60, 1351713), (66, 1228830), (90, 901142), (99, 819220), (110, 737298), (132, 614415), (165, 491532), (180, 450571), (198, 409610), (220, 368649), (330, 245766), (396, 204805), (495, 163844), (660, 122883), (990, 81922), (1980, 40961)]