398907912

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{1278551}}^1$

素因数の和:1278573

約数の個数: 32

約数和(自身を含む): 1073983680

約数和(自身を除く): 675075768

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 1278551, 2557102, 3835653, 5114204, 7671306, 10228408, 15342612, 16621163, 30685224, 33242326, 49863489, 66484652, 99726978, 132969304, 199453956, 398907912]

約数ペア:

[(1, 398907912), (2, 199453956), (3, 132969304), (4, 99726978), (6, 66484652), (8, 49863489), (12, 33242326), (13, 30685224), (24, 16621163), (26, 15342612), (39, 10228408), (52, 7671306), (78, 5114204), (104, 3835653), (156, 2557102), (312, 1278551)]