199989816

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{640993}}^1$

素因数の和:641015

約数の個数: 32

約数和(自身を含む): 538434960

約数和(自身を除く): 338445144

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 640993, 1281986, 1922979, 2563972, 3845958, 5127944, 7691916, 8332909, 15383832, 16665818, 24998727, 33331636, 49997454, 66663272, 99994908, 199989816]

約数ペア:

[(1, 199989816), (2, 99994908), (3, 66663272), (4, 49997454), (6, 33331636), (8, 24998727), (12, 16665818), (13, 15383832), (24, 8332909), (26, 7691916), (39, 5127944), (52, 3845958), (78, 2563972), (104, 1922979), (156, 1281986), (312, 640993)]