20731225344

素因数分解:

$2^8\times 3^1\times {\mathrm{643}}^1\times {\mathrm{41981}}^1$

素因数の和:42643

約数の個数: 72

約数和(自身を含む): 55262417952

約数和(自身を除く): 34531192608

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 643, 768, 1286, 1929, 2572, 3858, 5144, 7716, 10288, 15432, 20576, 30864, 41152, 41981, 61728, 82304, 83962, 123456, 125943, 164608, 167924, 246912, 251886, 335848, 493824, 503772, 671696, 1007544, 1343392, 2015088, 2686784, 4030176, 5373568, 8060352, 10747136, 16120704, 26993783, 32241408, 53987566, 80981349, 107975132, 161962698, 215950264, 323925396, 431900528, 647850792, 863801056, 1295701584, 1727602112, 2591403168, 3455204224, 5182806336, 6910408448, 10365612672, 20731225344]

約数ペア:

[(1, 20731225344), (2, 10365612672), (3, 6910408448), (4, 5182806336), (6, 3455204224), (8, 2591403168), (12, 1727602112), (16, 1295701584), (24, 863801056), (32, 647850792), (48, 431900528), (64, 323925396), (96, 215950264), (128, 161962698), (192, 107975132), (256, 80981349), (384, 53987566), (643, 32241408), (768, 26993783), (1286, 16120704), (1929, 10747136), (2572, 8060352), (3858, 5373568), (5144, 4030176), (7716, 2686784), (10288, 2015088), (15432, 1343392), (20576, 1007544), (30864, 671696), (41152, 503772), (41981, 493824), (61728, 335848), (82304, 251886), (83962, 246912), (123456, 167924), (125943, 164608)]