20168994640

素因数分解:

$2^4\times 5^1\times {\mathrm{16673}}^1\times {\mathrm{15121}}^1$

素因数の和:31807

約数の個数: 40

約数和(自身を含む): 46898826408

約数和(自身を除く): 26729831768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15121, 16673, 30242, 33346, 60484, 66692, 75605, 83365, 120968, 133384, 151210, 166730, 241936, 266768, 302420, 333460, 604840, 666920, 1209680, 1333840, 252112433, 504224866, 1008449732, 1260562165, 2016899464, 2521124330, 4033798928, 5042248660, 10084497320, 20168994640]

約数ペア:

[(1, 20168994640), (2, 10084497320), (4, 5042248660), (5, 4033798928), (8, 2521124330), (10, 2016899464), (16, 1260562165), (20, 1008449732), (40, 504224866), (80, 252112433), (15121, 1333840), (16673, 1209680), (30242, 666920), (33346, 604840), (60484, 333460), (66692, 302420), (75605, 266768), (83365, 241936), (120968, 166730), (133384, 151210)]