20123612890

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{309737}}^1$

素因数の和:309906

約数の個数: 32

約数和(自身を含む): 37131391440

約数和(自身を除く): 17007778550

約数列:

[1, 2, 5, 10, 73, 89, 146, 178, 365, 445, 730, 890, 6497, 12994, 32485, 64970, 309737, 619474, 1548685, 3097370, 22610801, 27566593, 45221602, 55133186, 113054005, 137832965, 226108010, 275665930, 2012361289, 4024722578, 10061806445, 20123612890]

約数ペア:

[(1, 20123612890), (2, 10061806445), (5, 4024722578), (10, 2012361289), (73, 275665930), (89, 226108010), (146, 137832965), (178, 113054005), (365, 55133186), (445, 45221602), (730, 27566593), (890, 22610801), (6497, 3097370), (12994, 1548685), (32485, 619474), (64970, 309737)]