20667460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2539}}^1$

素因数の和:2596

約数の個数: 48

約数和(自身を含む): 48646080

約数和(自身を除く): 27978620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2539, 4070, 5078, 8140, 10156, 12695, 25390, 27929, 50780, 55858, 93943, 111716, 139645, 187886, 279290, 375772, 469715, 558580, 939430, 1033373, 1878860, 2066746, 4133492, 5166865, 10333730, 20667460]

約数ペア:

[(1, 20667460), (2, 10333730), (4, 5166865), (5, 4133492), (10, 2066746), (11, 1878860), (20, 1033373), (22, 939430), (37, 558580), (44, 469715), (55, 375772), (74, 279290), (110, 187886), (148, 139645), (185, 111716), (220, 93943), (370, 55858), (407, 50780), (740, 27929), (814, 25390), (1628, 12695), (2035, 10156), (2539, 8140), (4070, 5078)]