198431258

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1\times {\mathrm{409}}^1$

素因数の和:686

約数の個数: 32

約数和(自身を含む): 318816000

約数和(自身を除く): 120384742

約数列:

[1, 2, 23, 46, 53, 106, 199, 398, 409, 818, 1219, 2438, 4577, 9154, 9407, 10547, 18814, 21094, 21677, 43354, 81391, 162782, 242581, 485162, 498571, 997142, 1871993, 3743986, 4313723, 8627446, 99215629, 198431258]

約数ペア:

[(1, 198431258), (2, 99215629), (23, 8627446), (46, 4313723), (53, 3743986), (106, 1871993), (199, 997142), (398, 498571), (409, 485162), (818, 242581), (1219, 162782), (2438, 81391), (4577, 43354), (9154, 21677), (9407, 21094), (10547, 18814)]