21254096

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{587}}^1$

素因数の和:699

約数の個数: 40

約数和(自身を含む): 43163904

約数和(自身を除く): 21909808

約数列:

[1, 2, 4, 8, 16, 31, 62, 73, 124, 146, 248, 292, 496, 584, 587, 1168, 1174, 2263, 2348, 4526, 4696, 9052, 9392, 18104, 18197, 36208, 36394, 42851, 72788, 85702, 145576, 171404, 291152, 342808, 685616, 1328381, 2656762, 5313524, 10627048, 21254096]

約数ペア:

[(1, 21254096), (2, 10627048), (4, 5313524), (8, 2656762), (16, 1328381), (31, 685616), (62, 342808), (73, 291152), (124, 171404), (146, 145576), (248, 85702), (292, 72788), (496, 42851), (584, 36394), (587, 36208), (1168, 18197), (1174, 18104), (2263, 9392), (2348, 9052), (4526, 4696)]