19905795

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4861}}^1$

素因数の和:4892

約数の個数: 48

約数和(自身を含む): 42474432

約数和(自身を除く): 22568637

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 4861, 14583, 24305, 34027, 43749, 63193, 72915, 102081, 170135, 189579, 218745, 306243, 315965, 442351, 510405, 568737, 947895, 1327053, 1531215, 2211755, 2843685, 3981159, 6635265, 19905795]

約数ペア:

[(1, 19905795), (3, 6635265), (5, 3981159), (7, 2843685), (9, 2211755), (13, 1531215), (15, 1327053), (21, 947895), (35, 568737), (39, 510405), (45, 442351), (63, 315965), (65, 306243), (91, 218745), (105, 189579), (117, 170135), (195, 102081), (273, 72915), (315, 63193), (455, 43749), (585, 34027), (819, 24305), (1365, 14583), (4095, 4861)]