20721392

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{41777}}^1$

素因数の和:41816

約数の個数: 20

約数和(自身を含む): 41443776

約数和(自身を除く): 20722384

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 41777, 83554, 167108, 334216, 668432, 1295087, 2590174, 5180348, 10360696, 20721392]

約数ペア:

[(1, 20721392), (2, 10360696), (4, 5180348), (8, 2590174), (16, 1295087), (31, 668432), (62, 334216), (124, 167108), (248, 83554), (496, 41777)]