21551816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18839}}^1$

素因数の和:18869

約数の個数: 32

約数和(自身を含む): 47476800

約数和(自身を除く): 25924984

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 18839, 37678, 75356, 150712, 207229, 244907, 414458, 489814, 828916, 979628, 1657832, 1959256, 2693977, 5387954, 10775908, 21551816]

約数ペア:

[(1, 21551816), (2, 10775908), (4, 5387954), (8, 2693977), (11, 1959256), (13, 1657832), (22, 979628), (26, 828916), (44, 489814), (52, 414458), (88, 244907), (104, 207229), (143, 150712), (286, 75356), (572, 37678), (1144, 18839)]