20560760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{563}}^1$

素因数の和:668

約数の個数: 64

約数和(自身を含む): 51166080

約数和(自身を除く): 30605320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 83, 88, 110, 166, 220, 332, 415, 440, 563, 664, 830, 913, 1126, 1660, 1826, 2252, 2815, 3320, 3652, 4504, 4565, 5630, 6193, 7304, 9130, 11260, 12386, 18260, 22520, 24772, 30965, 36520, 46729, 49544, 61930, 93458, 123860, 186916, 233645, 247720, 373832, 467290, 514019, 934580, 1028038, 1869160, 2056076, 2570095, 4112152, 5140190, 10280380, 20560760]

約数ペア:

[(1, 20560760), (2, 10280380), (4, 5140190), (5, 4112152), (8, 2570095), (10, 2056076), (11, 1869160), (20, 1028038), (22, 934580), (40, 514019), (44, 467290), (55, 373832), (83, 247720), (88, 233645), (110, 186916), (166, 123860), (220, 93458), (332, 61930), (415, 49544), (440, 46729), (563, 36520), (664, 30965), (830, 24772), (913, 22520), (1126, 18260), (1660, 12386), (1826, 11260), (2252, 9130), (2815, 7304), (3320, 6193), (3652, 5630), (4504, 4565)]