399999912

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{1282051}}^1$

素因数の和:1282073

約数の個数: 32

約数和(自身を含む): 1076923680

約数和(自身を除く): 676923768

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 1282051, 2564102, 3846153, 5128204, 7692306, 10256408, 15384612, 16666663, 30769224, 33333326, 49999989, 66666652, 99999978, 133333304, 199999956, 399999912]

約数ペア:

[(1, 399999912), (2, 199999956), (3, 133333304), (4, 99999978), (6, 66666652), (8, 49999989), (12, 33333326), (13, 30769224), (24, 16666663), (26, 15384612), (39, 10256408), (52, 7692306), (78, 5128204), (104, 3846153), (156, 2564102), (312, 1282051)]