20161115920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2731}}^1\times {\mathrm{8389}}^1$

素因数の和:11144

約数の個数: 80

約数和(自身を含む): 51160743360

約数和(自身を除く): 30999627440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 2731, 5462, 8389, 10924, 13655, 16778, 21848, 27310, 30041, 33556, 41945, 43696, 54620, 60082, 67112, 83890, 92279, 109240, 120164, 134224, 150205, 167780, 184558, 218480, 240328, 300410, 335560, 369116, 461395, 480656, 600820, 671120, 738232, 922790, 1201640, 1476464, 1845580, 2403280, 3691160, 7382320, 22910359, 45820718, 91641436, 114551795, 183282872, 229103590, 252013949, 366565744, 458207180, 504027898, 916414360, 1008055796, 1260069745, 1832828720, 2016111592, 2520139490, 4032223184, 5040278980, 10080557960, 20161115920]

約数ペア:

[(1, 20161115920), (2, 10080557960), (4, 5040278980), (5, 4032223184), (8, 2520139490), (10, 2016111592), (11, 1832828720), (16, 1260069745), (20, 1008055796), (22, 916414360), (40, 504027898), (44, 458207180), (55, 366565744), (80, 252013949), (88, 229103590), (110, 183282872), (176, 114551795), (220, 91641436), (440, 45820718), (880, 22910359), (2731, 7382320), (5462, 3691160), (8389, 2403280), (10924, 1845580), (13655, 1476464), (16778, 1201640), (21848, 922790), (27310, 738232), (30041, 671120), (33556, 600820), (41945, 480656), (43696, 461395), (54620, 369116), (60082, 335560), (67112, 300410), (83890, 240328), (92279, 218480), (109240, 184558), (120164, 167780), (134224, 150205)]