81778860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{6781}}^1$

素因数の和:6863

約数の個数: 72

約数和(自身を含む): 251802096

約数和(自身を除く): 170023236

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 67, 90, 134, 180, 201, 268, 335, 402, 603, 670, 804, 1005, 1206, 1340, 2010, 2412, 3015, 4020, 6030, 6781, 12060, 13562, 20343, 27124, 33905, 40686, 61029, 67810, 81372, 101715, 122058, 135620, 203430, 244116, 305145, 406860, 454327, 610290, 908654, 1220580, 1362981, 1817308, 2271635, 2725962, 4088943, 4543270, 5451924, 6814905, 8177886, 9086540, 13629810, 16355772, 20444715, 27259620, 40889430, 81778860]

約数ペア:

[(1, 81778860), (2, 40889430), (3, 27259620), (4, 20444715), (5, 16355772), (6, 13629810), (9, 9086540), (10, 8177886), (12, 6814905), (15, 5451924), (18, 4543270), (20, 4088943), (30, 2725962), (36, 2271635), (45, 1817308), (60, 1362981), (67, 1220580), (90, 908654), (134, 610290), (180, 454327), (201, 406860), (268, 305145), (335, 244116), (402, 203430), (603, 135620), (670, 122058), (804, 101715), (1005, 81372), (1206, 67810), (1340, 61029), (2010, 40686), (2412, 33905), (3015, 27124), (4020, 20343), (6030, 13562), (6781, 12060)]