20670320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{283}}^1$

素因数の和:390

約数の個数: 80

約数和(自身を含む): 53246592

約数和(自身を除く): 32576272

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 83, 88, 110, 166, 176, 220, 283, 332, 415, 440, 566, 664, 830, 880, 913, 1132, 1328, 1415, 1660, 1826, 2264, 2830, 3113, 3320, 3652, 4528, 4565, 5660, 6226, 6640, 7304, 9130, 11320, 12452, 14608, 15565, 18260, 22640, 23489, 24904, 31130, 36520, 46978, 49808, 62260, 73040, 93956, 117445, 124520, 187912, 234890, 249040, 258379, 375824, 469780, 516758, 939560, 1033516, 1291895, 1879120, 2067032, 2583790, 4134064, 5167580, 10335160, 20670320]

約数ペア:

[(1, 20670320), (2, 10335160), (4, 5167580), (5, 4134064), (8, 2583790), (10, 2067032), (11, 1879120), (16, 1291895), (20, 1033516), (22, 939560), (40, 516758), (44, 469780), (55, 375824), (80, 258379), (83, 249040), (88, 234890), (110, 187912), (166, 124520), (176, 117445), (220, 93956), (283, 73040), (332, 62260), (415, 49808), (440, 46978), (566, 36520), (664, 31130), (830, 24904), (880, 23489), (913, 22640), (1132, 18260), (1328, 15565), (1415, 14608), (1660, 12452), (1826, 11320), (2264, 9130), (2830, 7304), (3113, 6640), (3320, 6226), (3652, 5660), (4528, 4565)]