399385280

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{25471}}^1$

素因数の和:25502

約数の個数: 84

約数和(自身を含む): 1106350848

約数和(自身を除く): 706965568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 784, 980, 1120, 1568, 1960, 2240, 3136, 3920, 7840, 15680, 25471, 50942, 101884, 127355, 178297, 203768, 254710, 356594, 407536, 509420, 713188, 815072, 891485, 1018840, 1248079, 1426376, 1630144, 1782970, 2037680, 2496158, 2852752, 3565940, 4075360, 4992316, 5705504, 6240395, 7131880, 8150720, 9984632, 11411008, 12480790, 14263760, 19969264, 24961580, 28527520, 39938528, 49923160, 57055040, 79877056, 99846320, 199692640, 399385280]

約数ペア:

[(1, 399385280), (2, 199692640), (4, 99846320), (5, 79877056), (7, 57055040), (8, 49923160), (10, 39938528), (14, 28527520), (16, 24961580), (20, 19969264), (28, 14263760), (32, 12480790), (35, 11411008), (40, 9984632), (49, 8150720), (56, 7131880), (64, 6240395), (70, 5705504), (80, 4992316), (98, 4075360), (112, 3565940), (140, 2852752), (160, 2496158), (196, 2037680), (224, 1782970), (245, 1630144), (280, 1426376), (320, 1248079), (392, 1018840), (448, 891485), (490, 815072), (560, 713188), (784, 509420), (980, 407536), (1120, 356594), (1568, 254710), (1960, 203768), (2240, 178297), (3136, 127355), (3920, 101884), (7840, 50942), (15680, 25471)]