19880276

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{523}}^1$

素因数の和:600

約数の個数: 48

約数和(自身を含む): 40670784

約数和(自身を除く): 20790508

約数列:

[1, 2, 4, 13, 17, 26, 34, 43, 52, 68, 86, 172, 221, 442, 523, 559, 731, 884, 1046, 1118, 1462, 2092, 2236, 2924, 6799, 8891, 9503, 13598, 17782, 19006, 22489, 27196, 35564, 38012, 44978, 89956, 115583, 231166, 292357, 382313, 462332, 584714, 764626, 1169428, 1529252, 4970069, 9940138, 19880276]

約数ペア:

[(1, 19880276), (2, 9940138), (4, 4970069), (13, 1529252), (17, 1169428), (26, 764626), (34, 584714), (43, 462332), (52, 382313), (68, 292357), (86, 231166), (172, 115583), (221, 89956), (442, 44978), (523, 38012), (559, 35564), (731, 27196), (884, 22489), (1046, 19006), (1118, 17782), (1462, 13598), (2092, 9503), (2236, 8891), (2924, 6799)]