20920796

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7591}}^1$

素因数の和:7661

約数の個数: 24

約数和(自身を含む): 40176864

約数和(自身を除く): 19256068

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7591, 15182, 30364, 98683, 197366, 394732, 402323, 804646, 1609292, 5230199, 10460398, 20920796]

約数ペア:

[(1, 20920796), (2, 10460398), (4, 5230199), (13, 1609292), (26, 804646), (52, 402323), (53, 394732), (106, 197366), (212, 98683), (689, 30364), (1378, 15182), (2756, 7591)]