21027875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{373}}^1$

素因数の和:440

約数の個数: 32

約数和(自身を含む): 29405376

約数和(自身を除く): 8377501

約数列:

[1, 5, 11, 25, 41, 55, 125, 205, 275, 373, 451, 1025, 1375, 1865, 2255, 4103, 5125, 9325, 11275, 15293, 20515, 46625, 56375, 76465, 102575, 168223, 382325, 512875, 841115, 1911625, 4205575, 21027875]

約数ペア:

[(1, 21027875), (5, 4205575), (11, 1911625), (25, 841115), (41, 512875), (55, 382325), (125, 168223), (205, 102575), (275, 76465), (373, 56375), (451, 46625), (1025, 20515), (1375, 15293), (1865, 11275), (2255, 9325), (4103, 5125)]