678970448

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{25703}}^1$

素因数の和:25851

約数の個数: 40

約数和(自身を含む): 1427908608

約数和(自身を除く): 748938160

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 127, 208, 254, 508, 1016, 1651, 2032, 3302, 6604, 13208, 25703, 26416, 51406, 102812, 205624, 334139, 411248, 668278, 1336556, 2673112, 3264281, 5346224, 6528562, 13057124, 26114248, 42435653, 52228496, 84871306, 169742612, 339485224, 678970448]

約数ペア:

[(1, 678970448), (2, 339485224), (4, 169742612), (8, 84871306), (13, 52228496), (16, 42435653), (26, 26114248), (52, 13057124), (104, 6528562), (127, 5346224), (208, 3264281), (254, 2673112), (508, 1336556), (1016, 668278), (1651, 411248), (2032, 334139), (3302, 205624), (6604, 102812), (13208, 51406), (25703, 26416)]