16681905

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 30888000

約数和(自身を除く): 14206095

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 109, 171, 179, 285, 327, 537, 545, 855, 895, 981, 1611, 1635, 2071, 2685, 3401, 4905, 6213, 8055, 10203, 10355, 17005, 18639, 19511, 30609, 31065, 51015, 58533, 93195, 97555, 153045, 175599, 292665, 370709, 877995, 1112127, 1853545, 3336381, 5560635, 16681905]

約数ペア:

[(1, 16681905), (3, 5560635), (5, 3336381), (9, 1853545), (15, 1112127), (19, 877995), (45, 370709), (57, 292665), (95, 175599), (109, 153045), (171, 97555), (179, 93195), (285, 58533), (327, 51015), (537, 31065), (545, 30609), (855, 19511), (895, 18639), (981, 17005), (1611, 10355), (1635, 10203), (2071, 8055), (2685, 6213), (3401, 4905)]