21553505281

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{661}}^1\times {\mathrm{5801}}^1$

素因数の和:6553

約数の個数: 32

約数和(自身を含む): 27285924096

約数和(自身を除く): 5732418815

約数列:

[1, 7, 11, 73, 77, 511, 661, 803, 4627, 5621, 5801, 7271, 40607, 48253, 50897, 63811, 337771, 423473, 446677, 530783, 2964311, 3715481, 3834461, 4658203, 26841227, 32607421, 42179071, 279915653, 295253497, 1959409571, 3079072183, 21553505281]

約数ペア:

[(1, 21553505281), (7, 3079072183), (11, 1959409571), (73, 295253497), (77, 279915653), (511, 42179071), (661, 32607421), (803, 26841227), (4627, 4658203), (5621, 3834461), (5801, 3715481), (7271, 2964311), (40607, 530783), (48253, 446677), (50897, 423473), (63811, 337771)]