19994744

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4637}}^1$

素因数の和:4668

約数の個数: 48

約数和(自身を含む): 47585880

約数和(自身を除く): 27591136

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 49, 56, 77, 88, 98, 154, 196, 308, 392, 539, 616, 1078, 2156, 4312, 4637, 9274, 18548, 32459, 37096, 51007, 64918, 102014, 129836, 204028, 227213, 259672, 357049, 408056, 454426, 714098, 908852, 1428196, 1817704, 2499343, 2856392, 4998686, 9997372, 19994744]

約数ペア:

[(1, 19994744), (2, 9997372), (4, 4998686), (7, 2856392), (8, 2499343), (11, 1817704), (14, 1428196), (22, 908852), (28, 714098), (44, 454426), (49, 408056), (56, 357049), (77, 259672), (88, 227213), (98, 204028), (154, 129836), (196, 102014), (308, 64918), (392, 51007), (539, 37096), (616, 32459), (1078, 18548), (2156, 9274), (4312, 4637)]