81555660

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:294

約数の個数: 144

約数和(自身を含む): 260690976

約数和(自身を除く): 179135316

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 97, 108, 135, 162, 173, 180, 194, 243, 270, 291, 324, 346, 388, 405, 485, 486, 519, 540, 582, 692, 810, 865, 873, 970, 972, 1038, 1164, 1215, 1455, 1557, 1620, 1730, 1746, 1940, 2076, 2430, 2595, 2619, 2910, 3114, 3460, 3492, 4365, 4671, 4860, 5190, 5238, 5820, 6228, 7785, 7857, 8730, 9342, 10380, 10476, 13095, 14013, 15570, 15714, 16781, 17460, 18684, 23355, 23571, 26190, 28026, 31140, 31428, 33562, 39285, 42039, 46710, 47142, 50343, 52380, 56052, 67124, 70065, 78570, 83905, 84078, 93420, 94284, 100686, 117855, 140130, 151029, 157140, 167810, 168156, 201372, 210195, 235710, 251715, 280260, 302058, 335620, 420390, 453087, 471420, 503430, 604116, 755145, 840780, 906174, 1006860, 1359261, 1510290, 1812348, 2265435, 2718522, 3020580, 4077783, 4530870, 5437044, 6796305, 8155566, 9061740, 13592610, 16311132, 20388915, 27185220, 40777830, 81555660]

約数ペア:

[(1, 81555660), (2, 40777830), (3, 27185220), (4, 20388915), (5, 16311132), (6, 13592610), (9, 9061740), (10, 8155566), (12, 6796305), (15, 5437044), (18, 4530870), (20, 4077783), (27, 3020580), (30, 2718522), (36, 2265435), (45, 1812348), (54, 1510290), (60, 1359261), (81, 1006860), (90, 906174), (97, 840780), (108, 755145), (135, 604116), (162, 503430), (173, 471420), (180, 453087), (194, 420390), (243, 335620), (270, 302058), (291, 280260), (324, 251715), (346, 235710), (388, 210195), (405, 201372), (485, 168156), (486, 167810), (519, 157140), (540, 151029), (582, 140130), (692, 117855), (810, 100686), (865, 94284), (873, 93420), (970, 84078), (972, 83905), (1038, 78570), (1164, 70065), (1215, 67124), (1455, 56052), (1557, 52380), (1620, 50343), (1730, 47142), (1746, 46710), (1940, 42039), (2076, 39285), (2430, 33562), (2595, 31428), (2619, 31140), (2910, 28026), (3114, 26190), (3460, 23571), (3492, 23355), (4365, 18684), (4671, 17460), (4860, 16781), (5190, 15714), (5238, 15570), (5820, 14013), (6228, 13095), (7785, 10476), (7857, 10380), (8730, 9342)]