81740820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{27803}}^1$

素因数の和:27829

約数の個数: 72

約数和(自身を含む): 266251104

約数和(自身を除く): 184510284

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 27803, 55606, 83409, 111212, 139015, 166818, 194621, 278030, 333636, 389242, 417045, 556060, 583863, 778484, 834090, 973105, 1167726, 1362347, 1668180, 1946210, 2335452, 2724694, 2919315, 3892420, 4087041, 5449388, 5838630, 6811735, 8174082, 11677260, 13623470, 16348164, 20435205, 27246940, 40870410, 81740820]

約数ペア:

[(1, 81740820), (2, 40870410), (3, 27246940), (4, 20435205), (5, 16348164), (6, 13623470), (7, 11677260), (10, 8174082), (12, 6811735), (14, 5838630), (15, 5449388), (20, 4087041), (21, 3892420), (28, 2919315), (30, 2724694), (35, 2335452), (42, 1946210), (49, 1668180), (60, 1362347), (70, 1167726), (84, 973105), (98, 834090), (105, 778484), (140, 583863), (147, 556060), (196, 417045), (210, 389242), (245, 333636), (294, 278030), (420, 194621), (490, 166818), (588, 139015), (735, 111212), (980, 83409), (1470, 55606), (2940, 27803)]