21000724731

素因数分解:

$3^2\times 7^2\times {\mathrm{317}}^1\times {\mathrm{150223}}^1$

素因数の和:150560

約数の個数: 36

約数和(自身を含む): 35398482912

約数和(自身を除く): 14397758181

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 317, 441, 951, 2219, 2853, 6657, 15533, 19971, 46599, 139797, 150223, 450669, 1051561, 1352007, 3154683, 7360927, 9464049, 22082781, 47620691, 66248343, 142862073, 333344837, 428586219, 1000034511, 2333413859, 3000103533, 7000241577, 21000724731]

約数ペア:

[(1, 21000724731), (3, 7000241577), (7, 3000103533), (9, 2333413859), (21, 1000034511), (49, 428586219), (63, 333344837), (147, 142862073), (317, 66248343), (441, 47620691), (951, 22082781), (2219, 9464049), (2853, 7360927), (6657, 3154683), (15533, 1352007), (19971, 1051561), (46599, 450669), (139797, 150223)]