20121124864

素因数分解:

$2^{20}\times {\mathrm{31}}^1\times {\mathrm{619}}^1$

素因数の和:690

約数の個数: 84

約数和(自身を含む): 41607475840

約数和(自身を除く): 21486350976

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 619, 992, 1024, 1238, 1984, 2048, 2476, 3968, 4096, 4952, 7936, 8192, 9904, 15872, 16384, 19189, 19808, 31744, 32768, 38378, 39616, 63488, 65536, 76756, 79232, 126976, 131072, 153512, 158464, 253952, 262144, 307024, 316928, 507904, 524288, 614048, 633856, 1015808, 1048576, 1228096, 1267712, 2031616, 2456192, 2535424, 4063232, 4912384, 5070848, 8126464, 9824768, 10141696, 16252928, 19649536, 20283392, 32505856, 39299072, 40566784, 78598144, 81133568, 157196288, 162267136, 314392576, 324534272, 628785152, 649068544, 1257570304, 2515140608, 5030281216, 10060562432, 20121124864]

約数ペア:

[(1, 20121124864), (2, 10060562432), (4, 5030281216), (8, 2515140608), (16, 1257570304), (31, 649068544), (32, 628785152), (62, 324534272), (64, 314392576), (124, 162267136), (128, 157196288), (248, 81133568), (256, 78598144), (496, 40566784), (512, 39299072), (619, 32505856), (992, 20283392), (1024, 19649536), (1238, 16252928), (1984, 10141696), (2048, 9824768), (2476, 8126464), (3968, 5070848), (4096, 4912384), (4952, 4063232), (7936, 2535424), (8192, 2456192), (9904, 2031616), (15872, 1267712), (16384, 1228096), (19189, 1048576), (19808, 1015808), (31744, 633856), (32768, 614048), (38378, 524288), (39616, 507904), (63488, 316928), (65536, 307024), (76756, 262144), (79232, 253952), (126976, 158464), (131072, 153512)]