18819430

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{199}}^1$

素因数の和:413

約数の個数: 48

約数和(自身を含む): 39808800

約数和(自身を除く): 20989370

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 193, 199, 245, 386, 398, 490, 965, 995, 1351, 1393, 1930, 1990, 2702, 2786, 6755, 6965, 9457, 9751, 13510, 13930, 18914, 19502, 38407, 47285, 48755, 76814, 94570, 97510, 192035, 268849, 384070, 537698, 1344245, 1881943, 2688490, 3763886, 9409715, 18819430]

約数ペア:

[(1, 18819430), (2, 9409715), (5, 3763886), (7, 2688490), (10, 1881943), (14, 1344245), (35, 537698), (49, 384070), (70, 268849), (98, 192035), (193, 97510), (199, 94570), (245, 76814), (386, 48755), (398, 47285), (490, 38407), (965, 19502), (995, 18914), (1351, 13930), (1393, 13510), (1930, 9751), (1990, 9457), (2702, 6965), (2786, 6755)]