18791570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 22680430

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 71, 95, 133, 142, 190, 199, 266, 355, 398, 497, 665, 710, 994, 995, 1330, 1349, 1393, 1990, 2485, 2698, 2786, 3781, 4970, 6745, 6965, 7562, 9443, 13490, 13930, 14129, 18886, 18905, 26467, 28258, 37810, 47215, 52934, 70645, 94430, 98903, 132335, 141290, 197806, 264670, 268451, 494515, 536902, 989030, 1342255, 1879157, 2684510, 3758314, 9395785, 18791570]

約数ペア:

[(1, 18791570), (2, 9395785), (5, 3758314), (7, 2684510), (10, 1879157), (14, 1342255), (19, 989030), (35, 536902), (38, 494515), (70, 268451), (71, 264670), (95, 197806), (133, 141290), (142, 132335), (190, 98903), (199, 94430), (266, 70645), (355, 52934), (398, 47215), (497, 37810), (665, 28258), (710, 26467), (994, 18905), (995, 18886), (1330, 14129), (1349, 13930), (1393, 13490), (1990, 9443), (2485, 7562), (2698, 6965), (2786, 6745), (3781, 4970)]