639883972

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1757923}}^1$

素因数の和:1757947

約数の個数: 24

約数和(自身を含む): 1378212416

約数和(自身を除く): 738328444

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 1757923, 3515846, 7031692, 12305461, 22852999, 24610922, 45705998, 49221844, 91411996, 159970993, 319941986, 639883972]

約数ペア:

[(1, 639883972), (2, 319941986), (4, 159970993), (7, 91411996), (13, 49221844), (14, 45705998), (26, 24610922), (28, 22852999), (52, 12305461), (91, 7031692), (182, 3515846), (364, 1757923)]