21897340

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{233}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 47803392

約数和(自身を除く): 25906052

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 127, 148, 185, 233, 254, 370, 466, 508, 635, 740, 932, 1165, 1270, 2330, 2540, 4660, 4699, 8621, 9398, 17242, 18796, 23495, 29591, 34484, 43105, 46990, 59182, 86210, 93980, 118364, 147955, 172420, 295910, 591820, 1094867, 2189734, 4379468, 5474335, 10948670, 21897340]

約数ペア:

[(1, 21897340), (2, 10948670), (4, 5474335), (5, 4379468), (10, 2189734), (20, 1094867), (37, 591820), (74, 295910), (127, 172420), (148, 147955), (185, 118364), (233, 93980), (254, 86210), (370, 59182), (466, 46990), (508, 43105), (635, 34484), (740, 29591), (932, 23495), (1165, 18796), (1270, 17242), (2330, 9398), (2540, 8621), (4660, 4699)]