28919891

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{173}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 39287808

約数和(自身を除く): 10367917

約数列:

[1, 7, 11, 13, 77, 91, 143, 167, 173, 1001, 1169, 1211, 1837, 1903, 2171, 2249, 12859, 13321, 15197, 15743, 23881, 24739, 28891, 167167, 173173, 202237, 317801, 375583, 2224607, 2629081, 4131413, 28919891]

約数ペア:

[(1, 28919891), (7, 4131413), (11, 2629081), (13, 2224607), (77, 375583), (91, 317801), (143, 202237), (167, 173173), (173, 167167), (1001, 28891), (1169, 24739), (1211, 23881), (1837, 15743), (1903, 15197), (2171, 13321), (2249, 12859)]