18991176

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{523}}^1$

素因数の和:638

約数の個数: 64

約数和(自身を含む): 50932800

約数和(自身を除く): 31941624

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 89, 102, 136, 178, 204, 267, 356, 408, 523, 534, 712, 1046, 1068, 1513, 1569, 2092, 2136, 3026, 3138, 4184, 4539, 6052, 6276, 8891, 9078, 12104, 12552, 17782, 18156, 26673, 35564, 36312, 46547, 53346, 71128, 93094, 106692, 139641, 186188, 213384, 279282, 372376, 558564, 791299, 1117128, 1582598, 2373897, 3165196, 4747794, 6330392, 9495588, 18991176]

約数ペア:

[(1, 18991176), (2, 9495588), (3, 6330392), (4, 4747794), (6, 3165196), (8, 2373897), (12, 1582598), (17, 1117128), (24, 791299), (34, 558564), (51, 372376), (68, 279282), (89, 213384), (102, 186188), (136, 139641), (178, 106692), (204, 93094), (267, 71128), (356, 53346), (408, 46547), (523, 36312), (534, 35564), (712, 26673), (1046, 18156), (1068, 17782), (1513, 12552), (1569, 12104), (2092, 9078), (2136, 8891), (3026, 6276), (3138, 6052), (4184, 4539)]