678400528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{105211}}^1$

素因数の和:105263

約数の個数: 40

約数和(自身を含む): 1461184256

約数和(自身を除く): 782783728

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 105211, 210422, 420844, 841688, 1367743, 1683376, 2735486, 3261541, 5470972, 6523082, 10941944, 13046164, 21883888, 26092328, 42400033, 52184656, 84800066, 169600132, 339200264, 678400528]

約数ペア:

[(1, 678400528), (2, 339200264), (4, 169600132), (8, 84800066), (13, 52184656), (16, 42400033), (26, 26092328), (31, 21883888), (52, 13046164), (62, 10941944), (104, 6523082), (124, 5470972), (208, 3261541), (248, 2735486), (403, 1683376), (496, 1367743), (806, 841688), (1612, 420844), (3224, 210422), (6448, 105211)]