18940090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1637}}^1$

素因数の和:1746

約数の個数: 32

約数和(自身を含む): 37149840

約数和(自身を除く): 18209750

約数列:

[1, 2, 5, 10, 13, 26, 65, 89, 130, 178, 445, 890, 1157, 1637, 2314, 3274, 5785, 8185, 11570, 16370, 21281, 42562, 106405, 145693, 212810, 291386, 728465, 1456930, 1894009, 3788018, 9470045, 18940090]

約数ペア:

[(1, 18940090), (2, 9470045), (5, 3788018), (10, 1894009), (13, 1456930), (26, 728465), (65, 291386), (89, 212810), (130, 145693), (178, 106405), (445, 42562), (890, 21281), (1157, 16370), (1637, 11570), (2314, 8185), (3274, 5785)]