21678459460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{3701}}^1$

素因数の和:3906

約数の個数: 144

約数和(自身を含む): 54593542080

約数和(自身を除く): 32915082620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 139, 140, 172, 196, 215, 245, 278, 301, 430, 490, 556, 602, 695, 860, 973, 980, 1204, 1390, 1505, 1946, 2107, 2780, 3010, 3701, 3892, 4214, 4865, 5977, 6020, 6811, 7402, 8428, 9730, 10535, 11954, 13622, 14804, 18505, 19460, 21070, 23908, 25907, 27244, 29885, 34055, 37010, 41839, 42140, 51814, 59770, 68110, 74020, 83678, 103628, 119540, 129535, 136220, 159143, 167356, 181349, 209195, 259070, 292873, 318286, 362698, 418390, 514439, 518140, 585746, 636572, 725396, 795715, 836780, 906745, 1028878, 1114001, 1171492, 1464365, 1591430, 1813490, 2057756, 2228002, 2572195, 2928730, 3182860, 3601073, 3626980, 4456004, 5144390, 5570005, 5857460, 7202146, 7798007, 10288780, 11140010, 14404292, 15596014, 18005365, 22120877, 22280020, 25207511, 31192028, 36010730, 38990035, 44241754, 50415022, 72021460, 77980070, 88483508, 100830044, 110604385, 126037555, 154846139, 155960140, 221208770, 252075110, 309692278, 442417540, 504150220, 619384556, 774230695, 1083922973, 1548461390, 2167845946, 3096922780, 4335691892, 5419614865, 10839229730, 21678459460]

約数ペア:

[(1, 21678459460), (2, 10839229730), (4, 5419614865), (5, 4335691892), (7, 3096922780), (10, 2167845946), (14, 1548461390), (20, 1083922973), (28, 774230695), (35, 619384556), (43, 504150220), (49, 442417540), (70, 309692278), (86, 252075110), (98, 221208770), (139, 155960140), (140, 154846139), (172, 126037555), (196, 110604385), (215, 100830044), (245, 88483508), (278, 77980070), (301, 72021460), (430, 50415022), (490, 44241754), (556, 38990035), (602, 36010730), (695, 31192028), (860, 25207511), (973, 22280020), (980, 22120877), (1204, 18005365), (1390, 15596014), (1505, 14404292), (1946, 11140010), (2107, 10288780), (2780, 7798007), (3010, 7202146), (3701, 5857460), (3892, 5570005), (4214, 5144390), (4865, 4456004), (5977, 3626980), (6020, 3601073), (6811, 3182860), (7402, 2928730), (8428, 2572195), (9730, 2228002), (10535, 2057756), (11954, 1813490), (13622, 1591430), (14804, 1464365), (18505, 1171492), (19460, 1114001), (21070, 1028878), (23908, 906745), (25907, 836780), (27244, 795715), (29885, 725396), (34055, 636572), (37010, 585746), (41839, 518140), (42140, 514439), (51814, 418390), (59770, 362698), (68110, 318286), (74020, 292873), (83678, 259070), (103628, 209195), (119540, 181349), (129535, 167356), (136220, 159143)]