399965592

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{1281941}}^1$

素因数の和:1281963

約数の個数: 32

約数和(自身を含む): 1076831280

約数和(自身を除く): 676865688

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 1281941, 2563882, 3845823, 5127764, 7691646, 10255528, 15383292, 16665233, 30766584, 33330466, 49995699, 66660932, 99991398, 133321864, 199982796, 399965592]

約数ペア:

[(1, 399965592), (2, 199982796), (3, 133321864), (4, 99991398), (6, 66660932), (8, 49995699), (12, 33330466), (13, 30766584), (24, 16665233), (26, 15383292), (39, 10255528), (52, 7691646), (78, 5127764), (104, 3845823), (156, 2563882), (312, 1281941)]