19990322445

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{220973}}^1$

素因数の和:221181

約数の個数: 32

約数和(自身を含む): 33050639232

約数和(自身を除く): 13060316787

約数列:

[1, 3, 5, 15, 37, 111, 163, 185, 489, 555, 815, 2445, 6031, 18093, 30155, 90465, 220973, 662919, 1104865, 3314595, 8176001, 24528003, 36018599, 40880005, 108055797, 122640015, 180092995, 540278985, 1332688163, 3998064489, 6663440815, 19990322445]

約数ペア:

[(1, 19990322445), (3, 6663440815), (5, 3998064489), (15, 1332688163), (37, 540278985), (111, 180092995), (163, 122640015), (185, 108055797), (489, 40880005), (555, 36018599), (815, 24528003), (2445, 8176001), (6031, 3314595), (18093, 1104865), (30155, 662919), (90465, 220973)]