19828406

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{337}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 33616128

約数和(自身を除く): 13787722

約数列:

[1, 2, 13, 26, 31, 62, 73, 146, 337, 403, 674, 806, 949, 1898, 2263, 4381, 4526, 8762, 10447, 20894, 24601, 29419, 49202, 58838, 135811, 271622, 319813, 639626, 762631, 1525262, 9914203, 19828406]

約数ペア:

[(1, 19828406), (2, 9914203), (13, 1525262), (26, 762631), (31, 639626), (62, 319813), (73, 271622), (146, 135811), (337, 58838), (403, 49202), (674, 29419), (806, 24601), (949, 20894), (1898, 10447), (2263, 8762), (4381, 4526)]