19994640818

素因数分解:

$2^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1\times {\mathrm{431}}^1\times {\mathrm{509}}^1$

素因数の和:1370

約数の個数: 32

約数和(自身を含む): 30404160000

約数和(自身を除く): 10409519182

約数列:

[1, 2, 199, 229, 398, 431, 458, 509, 862, 1018, 45571, 85769, 91142, 98699, 101291, 116561, 171538, 197398, 202582, 219379, 233122, 438758, 19641101, 23195639, 39282202, 43656421, 46391278, 50237791, 87312842, 100475582, 9997320409, 19994640818]

約数ペア:

[(1, 19994640818), (2, 9997320409), (199, 100475582), (229, 87312842), (398, 50237791), (431, 46391278), (458, 43656421), (509, 39282202), (862, 23195639), (1018, 19641101), (45571, 438758), (85769, 233122), (91142, 219379), (98699, 202582), (101291, 197398), (116561, 171538)]