21008756

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{14549}}^1$

素因数の和:14591

約数の個数: 18

約数和(自身を含む): 38804850

約数和(自身を除く): 17796094

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 14549, 29098, 58196, 276431, 552862, 1105724, 5252189, 10504378, 21008756]

約数ペア:

[(1, 21008756), (2, 10504378), (4, 5252189), (19, 1105724), (38, 552862), (76, 276431), (361, 58196), (722, 29098), (1444, 14549)]