66539960

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{18691}}^1$

素因数の和:18791

約数の個数: 32

約数和(自身を含む): 151405200

約数和(自身を除く): 84865240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 18691, 37382, 74764, 93455, 149528, 186910, 373820, 747640, 1663499, 3326998, 6653996, 8317495, 13307992, 16634990, 33269980, 66539960]

約数ペア:

[(1, 66539960), (2, 33269980), (4, 16634990), (5, 13307992), (8, 8317495), (10, 6653996), (20, 3326998), (40, 1663499), (89, 747640), (178, 373820), (356, 186910), (445, 149528), (712, 93455), (890, 74764), (1780, 37382), (3560, 18691)]