20645948

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{523}}^1$

素因数の和:737

約数の個数: 24

約数和(自身を含む): 36973440

約数和(自身を除く): 16327492

約数列:

[1, 2, 4, 71, 139, 142, 278, 284, 523, 556, 1046, 2092, 9869, 19738, 37133, 39476, 72697, 74266, 145394, 148532, 290788, 5161487, 10322974, 20645948]

約数ペア:

[(1, 20645948), (2, 10322974), (4, 5161487), (71, 290788), (139, 148532), (142, 145394), (278, 74266), (284, 72697), (523, 39476), (556, 37133), (1046, 19738), (2092, 9869)]