1285221872

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{108991}}^1$

素因数の和:109077

約数の個数: 40

約数和(自身を含む): 2757061632

約数和(自身を除く): 1471839760

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 67, 88, 134, 176, 268, 536, 737, 1072, 1474, 2948, 5896, 11792, 108991, 217982, 435964, 871928, 1198901, 1743856, 2397802, 4795604, 7302397, 9591208, 14604794, 19182416, 29209588, 58419176, 80326367, 116838352, 160652734, 321305468, 642610936, 1285221872]

約数ペア:

[(1, 1285221872), (2, 642610936), (4, 321305468), (8, 160652734), (11, 116838352), (16, 80326367), (22, 58419176), (44, 29209588), (67, 19182416), (88, 14604794), (134, 9591208), (176, 7302397), (268, 4795604), (536, 2397802), (737, 1743856), (1072, 1198901), (1474, 871928), (2948, 435964), (5896, 217982), (11792, 108991)]