31449160

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{12889}}^1$

素因数の和:12961

約数の個数: 32

約数和(自身を含む): 71926200

約数和(自身を除く): 40477040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 12889, 25778, 51556, 64445, 103112, 128890, 257780, 515560, 786229, 1572458, 3144916, 3931145, 6289832, 7862290, 15724580, 31449160]

約数ペア:

[(1, 31449160), (2, 15724580), (4, 7862290), (5, 6289832), (8, 3931145), (10, 3144916), (20, 1572458), (40, 786229), (61, 515560), (122, 257780), (244, 128890), (305, 103112), (488, 64445), (610, 51556), (1220, 25778), (2440, 12889)]