181173580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{929}}^1$

素因数の和:1151

約数の個数: 72

約数和(自身を含む): 445284000

約数和(自身を除く): 264110420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 199, 245, 398, 490, 796, 929, 980, 995, 1393, 1858, 1990, 2786, 3716, 3980, 4645, 5572, 6503, 6965, 9290, 9751, 13006, 13930, 18580, 19502, 26012, 27860, 32515, 39004, 45521, 48755, 65030, 91042, 97510, 130060, 182084, 184871, 195020, 227605, 369742, 455210, 739484, 910420, 924355, 1294097, 1848710, 2588194, 3697420, 5176388, 6470485, 9058679, 12940970, 18117358, 25881940, 36234716, 45293395, 90586790, 181173580]

約数ペア:

[(1, 181173580), (2, 90586790), (4, 45293395), (5, 36234716), (7, 25881940), (10, 18117358), (14, 12940970), (20, 9058679), (28, 6470485), (35, 5176388), (49, 3697420), (70, 2588194), (98, 1848710), (140, 1294097), (196, 924355), (199, 910420), (245, 739484), (398, 455210), (490, 369742), (796, 227605), (929, 195020), (980, 184871), (995, 182084), (1393, 130060), (1858, 97510), (1990, 91042), (2786, 65030), (3716, 48755), (3980, 45521), (4645, 39004), (5572, 32515), (6503, 27860), (6965, 26012), (9290, 19502), (9751, 18580), (13006, 13930)]