19717516

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2851}}^1$

素因数の和:2894

約数の個数: 48

約数和(自身を含む): 44719360

約数和(自身を除く): 25001844

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 182, 247, 266, 364, 494, 532, 988, 1729, 2851, 3458, 5702, 6916, 11404, 19957, 37063, 39914, 54169, 74126, 79828, 108338, 148252, 216676, 259441, 379183, 518882, 704197, 758366, 1037764, 1408394, 1516732, 2816788, 4929379, 9858758, 19717516]

約数ペア:

[(1, 19717516), (2, 9858758), (4, 4929379), (7, 2816788), (13, 1516732), (14, 1408394), (19, 1037764), (26, 758366), (28, 704197), (38, 518882), (52, 379183), (76, 259441), (91, 216676), (133, 148252), (182, 108338), (247, 79828), (266, 74126), (364, 54169), (494, 39914), (532, 37063), (988, 19957), (1729, 11404), (2851, 6916), (3458, 5702)]