19907576

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2857}}^1$

素因数の和:2943

約数の個数: 32

約数和(自身を含む): 40812240

約数和(自身を除く): 20904664

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 2857, 3484, 5714, 6968, 11428, 22856, 37141, 74282, 148564, 191419, 297128, 382838, 765676, 1531352, 2488447, 4976894, 9953788, 19907576]

約数ペア:

[(1, 19907576), (2, 9953788), (4, 4976894), (8, 2488447), (13, 1531352), (26, 765676), (52, 382838), (67, 297128), (104, 191419), (134, 148564), (268, 74282), (536, 37141), (871, 22856), (1742, 11428), (2857, 6968), (3484, 5714)]