19900518

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4943}}^1$

素因数の和:5020

約数の個数: 32

約数和(自身を含む): 44140032

約数和(自身を除く): 24239514

約数列:

[1, 2, 3, 6, 11, 22, 33, 61, 66, 122, 183, 366, 671, 1342, 2013, 4026, 4943, 9886, 14829, 29658, 54373, 108746, 163119, 301523, 326238, 603046, 904569, 1809138, 3316753, 6633506, 9950259, 19900518]

約数ペア:

[(1, 19900518), (2, 9950259), (3, 6633506), (6, 3316753), (11, 1809138), (22, 904569), (33, 603046), (61, 326238), (66, 301523), (122, 163119), (183, 108746), (366, 54373), (671, 29658), (1342, 14829), (2013, 9886), (4026, 4943)]