20651372

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{17989}}^1$

素因数の和:18041

約数の個数: 24

約数和(自身を含む): 42312480

約数和(自身を除く): 21661108

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 17989, 35978, 71956, 125923, 251846, 503692, 737549, 1475098, 2950196, 5162843, 10325686, 20651372]

約数ペア:

[(1, 20651372), (2, 10325686), (4, 5162843), (7, 2950196), (14, 1475098), (28, 737549), (41, 503692), (82, 251846), (164, 125923), (287, 71956), (574, 35978), (1148, 17989)]