21296221280

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{3221}}^1$

素因数の和:3341

約数の個数: 144

約数和(自身を含む): 53213185872

約数和(自身を除く): 31916964592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 43, 62, 80, 86, 124, 155, 160, 172, 215, 248, 310, 344, 430, 496, 620, 688, 860, 961, 992, 1240, 1333, 1376, 1720, 1922, 2480, 2666, 3221, 3440, 3844, 4805, 4960, 5332, 6442, 6665, 6880, 7688, 9610, 10664, 12884, 13330, 15376, 16105, 19220, 21328, 25768, 26660, 30752, 32210, 38440, 41323, 42656, 51536, 53320, 64420, 76880, 82646, 99851, 103072, 106640, 128840, 138503, 153760, 165292, 199702, 206615, 213280, 257680, 277006, 330584, 399404, 413230, 499255, 515360, 554012, 661168, 692515, 798808, 826460, 998510, 1108024, 1322336, 1385030, 1597616, 1652920, 1997020, 2216048, 2770060, 3095381, 3195232, 3305840, 3994040, 4293593, 4432096, 5540120, 6190762, 6611680, 7988080, 8587186, 11080240, 12381524, 15476905, 15976160, 17174372, 21467965, 22160480, 24763048, 30953810, 34348744, 42935930, 49526096, 61907620, 68697488, 85871860, 99052192, 123815240, 133101383, 137394976, 171743720, 247630480, 266202766, 343487440, 495260960, 532405532, 665506915, 686974880, 1064811064, 1331013830, 2129622128, 2662027660, 4259244256, 5324055320, 10648110640, 21296221280]

約数ペア:

[(1, 21296221280), (2, 10648110640), (4, 5324055320), (5, 4259244256), (8, 2662027660), (10, 2129622128), (16, 1331013830), (20, 1064811064), (31, 686974880), (32, 665506915), (40, 532405532), (43, 495260960), (62, 343487440), (80, 266202766), (86, 247630480), (124, 171743720), (155, 137394976), (160, 133101383), (172, 123815240), (215, 99052192), (248, 85871860), (310, 68697488), (344, 61907620), (430, 49526096), (496, 42935930), (620, 34348744), (688, 30953810), (860, 24763048), (961, 22160480), (992, 21467965), (1240, 17174372), (1333, 15976160), (1376, 15476905), (1720, 12381524), (1922, 11080240), (2480, 8587186), (2666, 7988080), (3221, 6611680), (3440, 6190762), (3844, 5540120), (4805, 4432096), (4960, 4293593), (5332, 3994040), (6442, 3305840), (6665, 3195232), (6880, 3095381), (7688, 2770060), (9610, 2216048), (10664, 1997020), (12884, 1652920), (13330, 1597616), (15376, 1385030), (16105, 1322336), (19220, 1108024), (21328, 998510), (25768, 826460), (26660, 798808), (30752, 692515), (32210, 661168), (38440, 554012), (41323, 515360), (42656, 499255), (51536, 413230), (53320, 399404), (64420, 330584), (76880, 277006), (82646, 257680), (99851, 213280), (103072, 206615), (106640, 199702), (128840, 165292), (138503, 153760)]