18914955

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{197}}^1$

素因数の和:415

約数の個数: 32

約数和(自身を含む): 31420224

約数和(自身を除く): 12505269

約数列:

[1, 3, 5, 15, 37, 111, 173, 185, 197, 519, 555, 591, 865, 985, 2595, 2955, 6401, 7289, 19203, 21867, 32005, 34081, 36445, 96015, 102243, 109335, 170405, 511215, 1260997, 3782991, 6304985, 18914955]

約数ペア:

[(1, 18914955), (3, 6304985), (5, 3782991), (15, 1260997), (37, 511215), (111, 170405), (173, 109335), (185, 102243), (197, 96015), (519, 36445), (555, 34081), (591, 32005), (865, 21867), (985, 19203), (2595, 7289), (2955, 6401)]