19938380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{107}}^1$

素因数の和:156

約数の個数: 96

約数和(自身を含む): 53125632

約数和(自身を除く): 33187252

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 107, 110, 121, 140, 154, 214, 220, 242, 308, 385, 428, 484, 535, 605, 749, 770, 847, 1070, 1177, 1210, 1331, 1498, 1540, 1694, 2140, 2354, 2420, 2662, 2996, 3388, 3745, 4235, 4708, 5324, 5885, 6655, 7490, 8239, 8470, 9317, 11770, 12947, 13310, 14980, 16478, 16940, 18634, 23540, 25894, 26620, 32956, 37268, 41195, 46585, 51788, 64735, 82390, 90629, 93170, 129470, 142417, 164780, 181258, 186340, 258940, 284834, 362516, 453145, 569668, 712085, 906290, 996919, 1424170, 1812580, 1993838, 2848340, 3987676, 4984595, 9969190, 19938380]

約数ペア:

[(1, 19938380), (2, 9969190), (4, 4984595), (5, 3987676), (7, 2848340), (10, 1993838), (11, 1812580), (14, 1424170), (20, 996919), (22, 906290), (28, 712085), (35, 569668), (44, 453145), (55, 362516), (70, 284834), (77, 258940), (107, 186340), (110, 181258), (121, 164780), (140, 142417), (154, 129470), (214, 93170), (220, 90629), (242, 82390), (308, 64735), (385, 51788), (428, 46585), (484, 41195), (535, 37268), (605, 32956), (749, 26620), (770, 25894), (847, 23540), (1070, 18634), (1177, 16940), (1210, 16478), (1331, 14980), (1498, 13310), (1540, 12947), (1694, 11770), (2140, 9317), (2354, 8470), (2420, 8239), (2662, 7490), (2996, 6655), (3388, 5885), (3745, 5324), (4235, 4708)]