639995384

素因数分解:

$2^3\times 7^1\times {\mathrm{11428489}}^1$

素因数の和:11428502

約数の個数: 16

約数和(自身を含む): 1371418800

約数和(自身を除く): 731423416

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 11428489, 22856978, 45713956, 79999423, 91427912, 159998846, 319997692, 639995384]

約数ペア:

[(1, 639995384), (2, 319997692), (4, 159998846), (7, 91427912), (8, 79999423), (14, 45713956), (28, 22856978), (56, 11428489)]