16394980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{647}}^1$

素因数の和:844

約数の個数: 48

約数和(自身を含む): 39626496

約数和(自身を除く): 23231516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 181, 362, 647, 724, 905, 1267, 1294, 1810, 2534, 2588, 3235, 3620, 4529, 5068, 6335, 6470, 9058, 12670, 12940, 18116, 22645, 25340, 45290, 90580, 117107, 234214, 468428, 585535, 819749, 1171070, 1639498, 2342140, 3278996, 4098745, 8197490, 16394980]

約数ペア:

[(1, 16394980), (2, 8197490), (4, 4098745), (5, 3278996), (7, 2342140), (10, 1639498), (14, 1171070), (20, 819749), (28, 585535), (35, 468428), (70, 234214), (140, 117107), (181, 90580), (362, 45290), (647, 25340), (724, 22645), (905, 18116), (1267, 12940), (1294, 12670), (1810, 9058), (2534, 6470), (2588, 6335), (3235, 5068), (3620, 4529)]