20658320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13591}}^1$

素因数の和:13623

約数の個数: 40

約数和(自身を含む): 50562240

約数和(自身を除く): 29903920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13591, 27182, 54364, 67955, 108728, 135910, 217456, 258229, 271820, 516458, 543640, 1032916, 1087280, 1291145, 2065832, 2582290, 4131664, 5164580, 10329160, 20658320]

約数ペア:

[(1, 20658320), (2, 10329160), (4, 5164580), (5, 4131664), (8, 2582290), (10, 2065832), (16, 1291145), (19, 1087280), (20, 1032916), (38, 543640), (40, 516458), (76, 271820), (80, 258229), (95, 217456), (152, 135910), (190, 108728), (304, 67955), (380, 54364), (760, 27182), (1520, 13591)]