19861485

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 38320128

約数和(自身を除く): 18458643

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 53, 83, 105, 129, 159, 215, 249, 265, 301, 371, 415, 581, 645, 795, 903, 1113, 1245, 1505, 1743, 1855, 2279, 2905, 3569, 4399, 4515, 5565, 6837, 8715, 10707, 11395, 13197, 15953, 17845, 21995, 24983, 30793, 34185, 47859, 53535, 65985, 74949, 79765, 92379, 124915, 153965, 189157, 239295, 374745, 461895, 567471, 945785, 1324099, 2837355, 3972297, 6620495, 19861485]

約数ペア:

[(1, 19861485), (3, 6620495), (5, 3972297), (7, 2837355), (15, 1324099), (21, 945785), (35, 567471), (43, 461895), (53, 374745), (83, 239295), (105, 189157), (129, 153965), (159, 124915), (215, 92379), (249, 79765), (265, 74949), (301, 65985), (371, 53535), (415, 47859), (581, 34185), (645, 30793), (795, 24983), (903, 21995), (1113, 17845), (1245, 15953), (1505, 13197), (1743, 11395), (1855, 10707), (2279, 8715), (2905, 6837), (3569, 5565), (4399, 4515)]