64380784

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{309523}}^1$

素因数の和:309544

約数の個数: 20

約数和(自身を含む): 134333416

約数和(自身を除く): 69952632

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 309523, 619046, 1238092, 2476184, 4023799, 4952368, 8047598, 16095196, 32190392, 64380784]

約数ペア:

[(1, 64380784), (2, 32190392), (4, 16095196), (8, 8047598), (13, 4952368), (16, 4023799), (26, 2476184), (52, 1238092), (104, 619046), (208, 309523)]