20123821025

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{947}}^1$

素因数の和:1084

約数の個数: 144

約数和(自身を含む): 33770338560

約数和(自身を除く): 13646517535

約数列:

[1, 5, 7, 11, 19, 25, 35, 49, 55, 77, 83, 95, 133, 175, 209, 245, 275, 385, 415, 475, 539, 581, 665, 913, 931, 947, 1045, 1225, 1463, 1577, 1925, 2075, 2695, 2905, 3325, 4067, 4565, 4655, 4735, 5225, 6391, 6629, 7315, 7885, 10241, 10417, 11039, 13475, 14525, 17347, 17993, 20335, 22825, 23275, 23675, 31955, 33145, 36575, 39425, 44737, 46403, 51205, 52085, 55195, 72919, 77273, 78601, 86735, 89965, 101675, 121429, 125951, 159775, 165725, 197923, 223685, 232015, 256025, 260425, 275975, 364595, 386365, 393005, 433675, 449825, 510433, 550207, 607145, 629755, 850003, 864611, 881657, 989615, 1118425, 1160075, 1385461, 1493419, 1822975, 1931825, 1965025, 2552165, 2751035, 3035725, 3148775, 3851449, 4250015, 4323055, 4408285, 4948075, 6052277, 6927305, 7467095, 9698227, 10453933, 12760825, 13755175, 16427609, 19257245, 21250075, 21615275, 22041425, 30261385, 34636525, 37335475, 42365939, 48491135, 52269665, 73177531, 82138045, 96286225, 114993263, 151306925, 211829695, 242455675, 261348325, 365887655, 410690225, 574966315, 804952841, 1059148475, 1829438275, 2874831575, 4024764205, 20123821025]

約数ペア:

[(1, 20123821025), (5, 4024764205), (7, 2874831575), (11, 1829438275), (19, 1059148475), (25, 804952841), (35, 574966315), (49, 410690225), (55, 365887655), (77, 261348325), (83, 242455675), (95, 211829695), (133, 151306925), (175, 114993263), (209, 96286225), (245, 82138045), (275, 73177531), (385, 52269665), (415, 48491135), (475, 42365939), (539, 37335475), (581, 34636525), (665, 30261385), (913, 22041425), (931, 21615275), (947, 21250075), (1045, 19257245), (1225, 16427609), (1463, 13755175), (1577, 12760825), (1925, 10453933), (2075, 9698227), (2695, 7467095), (2905, 6927305), (3325, 6052277), (4067, 4948075), (4565, 4408285), (4655, 4323055), (4735, 4250015), (5225, 3851449), (6391, 3148775), (6629, 3035725), (7315, 2751035), (7885, 2552165), (10241, 1965025), (10417, 1931825), (11039, 1822975), (13475, 1493419), (14525, 1385461), (17347, 1160075), (17993, 1118425), (20335, 989615), (22825, 881657), (23275, 864611), (23675, 850003), (31955, 629755), (33145, 607145), (36575, 550207), (39425, 510433), (44737, 449825), (46403, 433675), (51205, 393005), (52085, 386365), (55195, 364595), (72919, 275975), (77273, 260425), (78601, 256025), (86735, 232015), (89965, 223685), (101675, 197923), (121429, 165725), (125951, 159775)]