638996908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{233}}^1\times {\mathrm{397}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 1236047904

約数和(自身を除く): 597050996

約数列:

[1, 2, 4, 11, 22, 44, 157, 233, 314, 397, 466, 628, 794, 932, 1588, 1727, 2563, 3454, 4367, 5126, 6908, 8734, 10252, 17468, 36581, 62329, 73162, 92501, 124658, 146324, 185002, 249316, 370004, 402391, 685619, 804782, 1017511, 1371238, 1609564, 2035022, 2742476, 4070044, 14522657, 29045314, 58090628, 159749227, 319498454, 638996908]

約数ペア:

[(1, 638996908), (2, 319498454), (4, 159749227), (11, 58090628), (22, 29045314), (44, 14522657), (157, 4070044), (233, 2742476), (314, 2035022), (397, 1609564), (466, 1371238), (628, 1017511), (794, 804782), (932, 685619), (1588, 402391), (1727, 370004), (2563, 249316), (3454, 185002), (4367, 146324), (5126, 124658), (6908, 92501), (8734, 73162), (10252, 62329), (17468, 36581)]