19657750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 23473130

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 47, 50, 70, 94, 125, 175, 235, 239, 250, 329, 350, 470, 478, 658, 875, 1175, 1195, 1645, 1673, 1750, 2350, 2390, 3290, 3346, 5875, 5975, 8225, 8365, 11233, 11750, 11950, 16450, 16730, 22466, 29875, 41125, 41825, 56165, 59750, 78631, 82250, 83650, 112330, 157262, 209125, 280825, 393155, 418250, 561650, 786310, 1404125, 1965775, 2808250, 3931550, 9828875, 19657750]

約数ペア:

[(1, 19657750), (2, 9828875), (5, 3931550), (7, 2808250), (10, 1965775), (14, 1404125), (25, 786310), (35, 561650), (47, 418250), (50, 393155), (70, 280825), (94, 209125), (125, 157262), (175, 112330), (235, 83650), (239, 82250), (250, 78631), (329, 59750), (350, 56165), (470, 41825), (478, 41125), (658, 29875), (875, 22466), (1175, 16730), (1195, 16450), (1645, 11950), (1673, 11750), (1750, 11233), (2350, 8365), (2390, 8225), (3290, 5975), (3346, 5875)]