81552660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{27739}}^1$

素因数の和:27765

約数の個数: 72

約数和(自身を含む): 265638240

約数和(自身を除く): 184085580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 27739, 55478, 83217, 110956, 138695, 166434, 194173, 277390, 332868, 388346, 416085, 554780, 582519, 776692, 832170, 970865, 1165038, 1359211, 1664340, 1941730, 2330076, 2718422, 2912595, 3883460, 4077633, 5436844, 5825190, 6796055, 8155266, 11650380, 13592110, 16310532, 20388165, 27184220, 40776330, 81552660]

約数ペア:

[(1, 81552660), (2, 40776330), (3, 27184220), (4, 20388165), (5, 16310532), (6, 13592110), (7, 11650380), (10, 8155266), (12, 6796055), (14, 5825190), (15, 5436844), (20, 4077633), (21, 3883460), (28, 2912595), (30, 2718422), (35, 2330076), (42, 1941730), (49, 1664340), (60, 1359211), (70, 1165038), (84, 970865), (98, 832170), (105, 776692), (140, 582519), (147, 554780), (196, 416085), (210, 388346), (245, 332868), (294, 277390), (420, 194173), (490, 166434), (588, 138695), (735, 110956), (980, 83217), (1470, 55478), (2940, 27739)]