20121640456

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{449}}^1\times {\mathrm{1319}}^1$

素因数の和:1942

約数の個数: 64

約数和(自身を含む): 39346560000

約数和(自身を除く): 19224919544

約数列:

[1, 2, 4, 8, 31, 62, 124, 137, 248, 274, 449, 548, 898, 1096, 1319, 1796, 2638, 3592, 4247, 5276, 8494, 10552, 13919, 16988, 27838, 33976, 40889, 55676, 61513, 81778, 111352, 123026, 163556, 180703, 246052, 327112, 361406, 492104, 592231, 722812, 1184462, 1445624, 1906903, 2368924, 3813806, 4737848, 5601793, 7627612, 11203586, 15255224, 18359161, 22407172, 36718322, 44814344, 73436644, 81135647, 146873288, 162271294, 324542588, 649085176, 2515205057, 5030410114, 10060820228, 20121640456]

約数ペア:

[(1, 20121640456), (2, 10060820228), (4, 5030410114), (8, 2515205057), (31, 649085176), (62, 324542588), (124, 162271294), (137, 146873288), (248, 81135647), (274, 73436644), (449, 44814344), (548, 36718322), (898, 22407172), (1096, 18359161), (1319, 15255224), (1796, 11203586), (2638, 7627612), (3592, 5601793), (4247, 4737848), (5276, 3813806), (8494, 2368924), (10552, 1906903), (13919, 1445624), (16988, 1184462), (27838, 722812), (33976, 592231), (40889, 492104), (55676, 361406), (61513, 327112), (81778, 246052), (111352, 180703), (123026, 163556)]