16688140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{599}}^1$

素因数の和:814

約数の個数: 48

約数和(自身を含む): 40320000

約数和(自身を除く): 23631860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 599, 796, 995, 1198, 1393, 1990, 2396, 2786, 2995, 3980, 4193, 5572, 5990, 6965, 8386, 11980, 13930, 16772, 20965, 27860, 41930, 83860, 119201, 238402, 476804, 596005, 834407, 1192010, 1668814, 2384020, 3337628, 4172035, 8344070, 16688140]

約数ペア:

[(1, 16688140), (2, 8344070), (4, 4172035), (5, 3337628), (7, 2384020), (10, 1668814), (14, 1192010), (20, 834407), (28, 596005), (35, 476804), (70, 238402), (140, 119201), (199, 83860), (398, 41930), (599, 27860), (796, 20965), (995, 16772), (1198, 13930), (1393, 11980), (1990, 8386), (2396, 6965), (2786, 5990), (2995, 5572), (3980, 4193)]