18443320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{331}}^1$

素因数の和:548

約数の個数: 64

約数和(自身を含む): 47808000

約数和(自身を除く): 29364680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 199, 280, 331, 398, 662, 796, 995, 1324, 1393, 1592, 1655, 1990, 2317, 2648, 2786, 3310, 3980, 4634, 5572, 6620, 6965, 7960, 9268, 11144, 11585, 13240, 13930, 18536, 23170, 27860, 46340, 55720, 65869, 92680, 131738, 263476, 329345, 461083, 526952, 658690, 922166, 1317380, 1844332, 2305415, 2634760, 3688664, 4610830, 9221660, 18443320]

約数ペア:

[(1, 18443320), (2, 9221660), (4, 4610830), (5, 3688664), (7, 2634760), (8, 2305415), (10, 1844332), (14, 1317380), (20, 922166), (28, 658690), (35, 526952), (40, 461083), (56, 329345), (70, 263476), (140, 131738), (199, 92680), (280, 65869), (331, 55720), (398, 46340), (662, 27860), (796, 23170), (995, 18536), (1324, 13930), (1393, 13240), (1592, 11585), (1655, 11144), (1990, 9268), (2317, 7960), (2648, 6965), (2786, 6620), (3310, 5572), (3980, 4634)]