399270768

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{639857}}^1$

素因数の和:639881

約数の個数: 40

約数和(自身を含む): 1110793488

約数和(自身を除く): 711522720

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 639857, 1279714, 1919571, 2559428, 3839142, 5118856, 7678284, 8318141, 10237712, 15356568, 16636282, 24954423, 30713136, 33272564, 49908846, 66545128, 99817692, 133090256, 199635384, 399270768]

約数ペア:

[(1, 399270768), (2, 199635384), (3, 133090256), (4, 99817692), (6, 66545128), (8, 49908846), (12, 33272564), (13, 30713136), (16, 24954423), (24, 16636282), (26, 15356568), (39, 10237712), (48, 8318141), (52, 7678284), (78, 5118856), (104, 3839142), (156, 2559428), (208, 1919571), (312, 1279714), (624, 639857)]