20121103930

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{2707}}^1$

素因数の和:2852

約数の個数: 96

約数和(自身を含む): 40114362240

約数和(自身を除く): 19993258310

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 71, 95, 142, 145, 190, 290, 355, 361, 551, 710, 722, 1102, 1349, 1805, 2059, 2698, 2707, 2755, 3610, 4118, 5414, 5510, 6745, 10295, 10469, 13490, 13535, 20590, 20938, 25631, 27070, 39121, 51262, 51433, 52345, 78242, 78503, 102866, 104690, 128155, 157006, 192197, 195605, 256310, 257165, 384394, 391210, 392515, 514330, 743299, 785030, 960985, 977227, 1486598, 1491557, 1921970, 1954454, 2983114, 3651743, 3716495, 4886135, 5573713, 7303486, 7432990, 7457785, 9772270, 11147426, 14915570, 18258715, 27868565, 28339583, 36517430, 55737130, 56679166, 69383117, 105900547, 138766234, 141697915, 211801094, 283395830, 346915585, 529502735, 693831170, 1059005470, 2012110393, 4024220786, 10060551965, 20121103930]

約数ペア:

[(1, 20121103930), (2, 10060551965), (5, 4024220786), (10, 2012110393), (19, 1059005470), (29, 693831170), (38, 529502735), (58, 346915585), (71, 283395830), (95, 211801094), (142, 141697915), (145, 138766234), (190, 105900547), (290, 69383117), (355, 56679166), (361, 55737130), (551, 36517430), (710, 28339583), (722, 27868565), (1102, 18258715), (1349, 14915570), (1805, 11147426), (2059, 9772270), (2698, 7457785), (2707, 7432990), (2755, 7303486), (3610, 5573713), (4118, 4886135), (5414, 3716495), (5510, 3651743), (6745, 2983114), (10295, 1954454), (10469, 1921970), (13490, 1491557), (13535, 1486598), (20590, 977227), (20938, 960985), (25631, 785030), (27070, 743299), (39121, 514330), (51262, 392515), (51433, 391210), (52345, 384394), (78242, 257165), (78503, 256310), (102866, 195605), (104690, 192197), (128155, 157006)]