18192580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{653}}^1$

素因数の和:868

約数の個数: 48

約数和(自身を含む): 43948800

約数和(自身を除く): 25756220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 653, 796, 995, 1306, 1393, 1990, 2612, 2786, 3265, 3980, 4571, 5572, 6530, 6965, 9142, 13060, 13930, 18284, 22855, 27860, 45710, 91420, 129947, 259894, 519788, 649735, 909629, 1299470, 1819258, 2598940, 3638516, 4548145, 9096290, 18192580]

約数ペア:

[(1, 18192580), (2, 9096290), (4, 4548145), (5, 3638516), (7, 2598940), (10, 1819258), (14, 1299470), (20, 909629), (28, 649735), (35, 519788), (70, 259894), (140, 129947), (199, 91420), (398, 45710), (653, 27860), (796, 22855), (995, 18284), (1306, 13930), (1393, 13060), (1990, 9142), (2612, 6965), (2786, 6530), (3265, 5572), (3980, 4571)]