20013916

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 20628644

約数列:

[1, 2, 4, 13, 19, 26, 38, 47, 52, 76, 94, 188, 247, 431, 494, 611, 862, 893, 988, 1222, 1724, 1786, 2444, 3572, 5603, 8189, 11206, 11609, 16378, 20257, 22412, 23218, 32756, 40514, 46436, 81028, 106457, 212914, 263341, 384883, 425828, 526682, 769766, 1053364, 1539532, 5003479, 10006958, 20013916]

約数ペア:

[(1, 20013916), (2, 10006958), (4, 5003479), (13, 1539532), (19, 1053364), (26, 769766), (38, 526682), (47, 425828), (52, 384883), (76, 263341), (94, 212914), (188, 106457), (247, 81028), (431, 46436), (494, 40514), (611, 32756), (862, 23218), (893, 22412), (988, 20257), (1222, 16378), (1724, 11609), (1786, 11206), (2444, 8189), (3572, 5603)]