20565648640

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{2423}}^1$

素因数の和:2812

約数の個数: 144

約数和(自身を含む): 52023888000

約数和(自身を除く): 31458239360

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 349, 380, 608, 640, 698, 760, 1216, 1280, 1396, 1520, 1745, 2423, 2432, 2792, 3040, 3490, 4846, 4864, 5584, 6080, 6631, 6980, 9692, 11168, 12115, 12160, 13262, 13960, 19384, 22336, 24230, 24320, 26524, 27920, 33155, 38768, 44672, 46037, 48460, 53048, 55840, 66310, 77536, 89344, 92074, 96920, 106096, 111680, 132620, 155072, 184148, 193840, 212192, 223360, 230185, 265240, 310144, 368296, 387680, 424384, 446720, 460370, 530480, 620288, 736592, 775360, 845627, 848768, 920740, 1060960, 1473184, 1550720, 1691254, 1697536, 1841480, 2121920, 2946368, 3101440, 3382508, 3682960, 4228135, 4243840, 5892736, 6765016, 7365920, 8456270, 8487680, 11785472, 13530032, 14731840, 16066913, 16912540, 27060064, 29463680, 32133826, 33825080, 54120128, 58927360, 64267652, 67650160, 80334565, 108240256, 128535304, 135300320, 160669130, 216480512, 257070608, 270600640, 321338260, 514141216, 541201280, 642676520, 1028282432, 1082402560, 1285353040, 2056564864, 2570706080, 4113129728, 5141412160, 10282824320, 20565648640]

約数ペア:

[(1, 20565648640), (2, 10282824320), (4, 5141412160), (5, 4113129728), (8, 2570706080), (10, 2056564864), (16, 1285353040), (19, 1082402560), (20, 1028282432), (32, 642676520), (38, 541201280), (40, 514141216), (64, 321338260), (76, 270600640), (80, 257070608), (95, 216480512), (128, 160669130), (152, 135300320), (160, 128535304), (190, 108240256), (256, 80334565), (304, 67650160), (320, 64267652), (349, 58927360), (380, 54120128), (608, 33825080), (640, 32133826), (698, 29463680), (760, 27060064), (1216, 16912540), (1280, 16066913), (1396, 14731840), (1520, 13530032), (1745, 11785472), (2423, 8487680), (2432, 8456270), (2792, 7365920), (3040, 6765016), (3490, 5892736), (4846, 4243840), (4864, 4228135), (5584, 3682960), (6080, 3382508), (6631, 3101440), (6980, 2946368), (9692, 2121920), (11168, 1841480), (12115, 1697536), (12160, 1691254), (13262, 1550720), (13960, 1473184), (19384, 1060960), (22336, 920740), (24230, 848768), (24320, 845627), (26524, 775360), (27920, 736592), (33155, 620288), (38768, 530480), (44672, 460370), (46037, 446720), (48460, 424384), (53048, 387680), (55840, 368296), (66310, 310144), (77536, 265240), (89344, 230185), (92074, 223360), (96920, 212192), (106096, 193840), (111680, 184148), (132620, 155072)]