19958536

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4463}}^1$

素因数の和:4525

約数の個数: 32

約数和(自身を含む): 41247360

約数和(自身を除く): 21288824

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4463, 4472, 8926, 17852, 35704, 58019, 116038, 191909, 232076, 383818, 464152, 767636, 1535272, 2494817, 4989634, 9979268, 19958536]

約数ペア:

[(1, 19958536), (2, 9979268), (4, 4989634), (8, 2494817), (13, 1535272), (26, 767636), (43, 464152), (52, 383818), (86, 232076), (104, 191909), (172, 116038), (344, 58019), (559, 35704), (1118, 17852), (2236, 8926), (4463, 4472)]