1991904876

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{547}}^1$

素因数の和:852

約数の個数: 144

約数和(自身を含む): 5629897728

約数和(自身を除く): 3637992852

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 31, 36, 39, 52, 62, 78, 93, 117, 124, 156, 186, 234, 251, 279, 372, 403, 468, 502, 547, 558, 753, 806, 1004, 1094, 1116, 1209, 1506, 1612, 1641, 2188, 2259, 2418, 3012, 3263, 3282, 3627, 4518, 4836, 4923, 6526, 6564, 7111, 7254, 7781, 9036, 9789, 9846, 13052, 14222, 14508, 15562, 16957, 19578, 19692, 21333, 23343, 28444, 29367, 31124, 33914, 39156, 42666, 46686, 50871, 58734, 63999, 67828, 70029, 85332, 93372, 101153, 101742, 117468, 127998, 137297, 140058, 152613, 202306, 203484, 220441, 255996, 274594, 280116, 303459, 305226, 404612, 411891, 440882, 549188, 606918, 610452, 661323, 823782, 881764, 910377, 1213836, 1235673, 1322646, 1647564, 1784861, 1820754, 1983969, 2471346, 2645292, 3569722, 3641508, 3967938, 4256207, 4942692, 5354583, 7139444, 7935876, 8512414, 10709166, 12768621, 16063749, 17024828, 21418332, 25537242, 32127498, 38305863, 51074484, 55330691, 64254996, 76611726, 110661382, 153223452, 165992073, 221322764, 331984146, 497976219, 663968292, 995952438, 1991904876]

約数ペア:

[(1, 1991904876), (2, 995952438), (3, 663968292), (4, 497976219), (6, 331984146), (9, 221322764), (12, 165992073), (13, 153223452), (18, 110661382), (26, 76611726), (31, 64254996), (36, 55330691), (39, 51074484), (52, 38305863), (62, 32127498), (78, 25537242), (93, 21418332), (117, 17024828), (124, 16063749), (156, 12768621), (186, 10709166), (234, 8512414), (251, 7935876), (279, 7139444), (372, 5354583), (403, 4942692), (468, 4256207), (502, 3967938), (547, 3641508), (558, 3569722), (753, 2645292), (806, 2471346), (1004, 1983969), (1094, 1820754), (1116, 1784861), (1209, 1647564), (1506, 1322646), (1612, 1235673), (1641, 1213836), (2188, 910377), (2259, 881764), (2418, 823782), (3012, 661323), (3263, 610452), (3282, 606918), (3627, 549188), (4518, 440882), (4836, 411891), (4923, 404612), (6526, 305226), (6564, 303459), (7111, 280116), (7254, 274594), (7781, 255996), (9036, 220441), (9789, 203484), (9846, 202306), (13052, 152613), (14222, 140058), (14508, 137297), (15562, 127998), (16957, 117468), (19578, 101742), (19692, 101153), (21333, 93372), (23343, 85332), (28444, 70029), (29367, 67828), (31124, 63999), (33914, 58734), (39156, 50871), (42666, 46686)]