21042180

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:471

約数の個数: 120

約数和(自身を含む): 68302080

約数和(自身を除く): 47259900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 45, 54, 60, 62, 81, 90, 93, 108, 124, 135, 155, 162, 180, 186, 270, 279, 310, 324, 372, 405, 419, 465, 540, 558, 620, 810, 837, 838, 930, 1116, 1257, 1395, 1620, 1674, 1676, 1860, 2095, 2511, 2514, 2790, 3348, 3771, 4185, 4190, 5022, 5028, 5580, 6285, 7542, 8370, 8380, 10044, 11313, 12555, 12570, 12989, 15084, 16740, 18855, 22626, 25110, 25140, 25978, 33939, 37710, 38967, 45252, 50220, 51956, 56565, 64945, 67878, 75420, 77934, 113130, 116901, 129890, 135756, 155868, 169695, 194835, 226260, 233802, 259780, 339390, 350703, 389670, 467604, 584505, 678780, 701406, 779340, 1052109, 1169010, 1402812, 1753515, 2104218, 2338020, 3507030, 4208436, 5260545, 7014060, 10521090, 21042180]

約数ペア:

[(1, 21042180), (2, 10521090), (3, 7014060), (4, 5260545), (5, 4208436), (6, 3507030), (9, 2338020), (10, 2104218), (12, 1753515), (15, 1402812), (18, 1169010), (20, 1052109), (27, 779340), (30, 701406), (31, 678780), (36, 584505), (45, 467604), (54, 389670), (60, 350703), (62, 339390), (81, 259780), (90, 233802), (93, 226260), (108, 194835), (124, 169695), (135, 155868), (155, 135756), (162, 129890), (180, 116901), (186, 113130), (270, 77934), (279, 75420), (310, 67878), (324, 64945), (372, 56565), (405, 51956), (419, 50220), (465, 45252), (540, 38967), (558, 37710), (620, 33939), (810, 25978), (837, 25140), (838, 25110), (930, 22626), (1116, 18855), (1257, 16740), (1395, 15084), (1620, 12989), (1674, 12570), (1676, 12555), (1860, 11313), (2095, 10044), (2511, 8380), (2514, 8370), (2790, 7542), (3348, 6285), (3771, 5580), (4185, 5028), (4190, 5022)]