21155888931

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1361}}^1\times {\mathrm{2939}}^1$

素因数の和:4387

約数の個数: 32

約数和(自身を含む): 29599637760

約数和(自身を除く): 8443748829

約数列:

[1, 3, 41, 43, 123, 129, 1361, 1763, 2939, 4083, 5289, 8817, 55801, 58523, 120499, 126377, 167403, 175569, 361497, 379131, 2399443, 3999979, 5181457, 7198329, 11999937, 15544371, 163999139, 171999097, 491997417, 515997291, 7051962977, 21155888931]

約数ペア:

[(1, 21155888931), (3, 7051962977), (41, 515997291), (43, 491997417), (123, 171999097), (129, 163999139), (1361, 15544371), (1763, 11999937), (2939, 7198329), (4083, 5181457), (5289, 3999979), (8817, 2399443), (55801, 379131), (58523, 361497), (120499, 175569), (126377, 167403)]