87940900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1$

素因数の和:385

約数の個数: 72

約数和(自身を含む): 198502920

約数和(自身を除く): 110562020

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 89, 100, 164, 178, 205, 241, 356, 410, 445, 482, 820, 890, 964, 1025, 1205, 1780, 2050, 2225, 2410, 3649, 4100, 4450, 4820, 6025, 7298, 8900, 9881, 12050, 14596, 18245, 19762, 21449, 24100, 36490, 39524, 42898, 49405, 72980, 85796, 91225, 98810, 107245, 182450, 197620, 214490, 247025, 364900, 428980, 494050, 536225, 879409, 988100, 1072450, 1758818, 2144900, 3517636, 4397045, 8794090, 17588180, 21985225, 43970450, 87940900]

約数ペア:

[(1, 87940900), (2, 43970450), (4, 21985225), (5, 17588180), (10, 8794090), (20, 4397045), (25, 3517636), (41, 2144900), (50, 1758818), (82, 1072450), (89, 988100), (100, 879409), (164, 536225), (178, 494050), (205, 428980), (241, 364900), (356, 247025), (410, 214490), (445, 197620), (482, 182450), (820, 107245), (890, 98810), (964, 91225), (1025, 85796), (1205, 72980), (1780, 49405), (2050, 42898), (2225, 39524), (2410, 36490), (3649, 24100), (4100, 21449), (4450, 19762), (4820, 18245), (6025, 14596), (7298, 12050), (8900, 9881)]