20789961855

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{43}}^2\times {\mathrm{109}}^1$

素因数の和:262

約数の個数: 144

約数和(自身を含む): 38690799840

約数和(自身を除く): 17900837985

約数列:

[1, 3, 5, 13, 15, 23, 39, 43, 65, 69, 109, 115, 129, 195, 215, 299, 327, 345, 529, 545, 559, 645, 897, 989, 1417, 1495, 1587, 1635, 1677, 1849, 2507, 2645, 2795, 2967, 4251, 4485, 4687, 4945, 5547, 6877, 7085, 7521, 7935, 8385, 9245, 12535, 12857, 14061, 14835, 20631, 21255, 22747, 23435, 24037, 27735, 32591, 34385, 37605, 38571, 42527, 57661, 60931, 64285, 68241, 70305, 72111, 97773, 103155, 107801, 113735, 120185, 127581, 162955, 172983, 182793, 192855, 201541, 212635, 288305, 295711, 304655, 323403, 341205, 360555, 488865, 539005, 552851, 604623, 637905, 749593, 864915, 887133, 913965, 978121, 1007705, 1401413, 1478555, 1617015, 1658553, 2248779, 2479423, 2620033, 2764255, 2934363, 3023115, 3747965, 4204239, 4435665, 4635443, 4890605, 7007065, 7438269, 7860099, 8292765, 11243895, 12397115, 12715573, 13100165, 13906329, 14671815, 21021195, 23177215, 32232499, 37191345, 38146719, 39300495, 60260759, 63577865, 69531645, 96697497, 106615189, 161162495, 180782277, 190733595, 301303795, 319845567, 483487485, 533075945, 903911385, 1385997457, 1599227835, 4157992371, 6929987285, 20789961855]

約数ペア:

[(1, 20789961855), (3, 6929987285), (5, 4157992371), (13, 1599227835), (15, 1385997457), (23, 903911385), (39, 533075945), (43, 483487485), (65, 319845567), (69, 301303795), (109, 190733595), (115, 180782277), (129, 161162495), (195, 106615189), (215, 96697497), (299, 69531645), (327, 63577865), (345, 60260759), (529, 39300495), (545, 38146719), (559, 37191345), (645, 32232499), (897, 23177215), (989, 21021195), (1417, 14671815), (1495, 13906329), (1587, 13100165), (1635, 12715573), (1677, 12397115), (1849, 11243895), (2507, 8292765), (2645, 7860099), (2795, 7438269), (2967, 7007065), (4251, 4890605), (4485, 4635443), (4687, 4435665), (4945, 4204239), (5547, 3747965), (6877, 3023115), (7085, 2934363), (7521, 2764255), (7935, 2620033), (8385, 2479423), (9245, 2248779), (12535, 1658553), (12857, 1617015), (14061, 1478555), (14835, 1401413), (20631, 1007705), (21255, 978121), (22747, 913965), (23435, 887133), (24037, 864915), (27735, 749593), (32591, 637905), (34385, 604623), (37605, 552851), (38571, 539005), (42527, 488865), (57661, 360555), (60931, 341205), (64285, 323403), (68241, 304655), (70305, 295711), (72111, 288305), (97773, 212635), (103155, 201541), (107801, 192855), (113735, 182793), (120185, 172983), (127581, 162955)]