19696976

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{337}}^1$

素因数の和:639

約数の個数: 40

約数和(自身を含む): 41367144

約数和(自身を除く): 21670168

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 281, 337, 562, 674, 1124, 1348, 2248, 2696, 3653, 4381, 4496, 5392, 7306, 8762, 14612, 17524, 29224, 35048, 58448, 70096, 94697, 189394, 378788, 757576, 1231061, 1515152, 2462122, 4924244, 9848488, 19696976]

約数ペア:

[(1, 19696976), (2, 9848488), (4, 4924244), (8, 2462122), (13, 1515152), (16, 1231061), (26, 757576), (52, 378788), (104, 189394), (208, 94697), (281, 70096), (337, 58448), (562, 35048), (674, 29224), (1124, 17524), (1348, 14612), (2248, 8762), (2696, 7306), (3653, 5392), (4381, 4496)]