128052080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123127}}^1$

素因数の和:123153

約数の個数: 40

約数和(自身を含む): 320625312

約数和(自身を除く): 192573232

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 123127, 246254, 492508, 615635, 985016, 1231270, 1600651, 1970032, 2462540, 3201302, 4925080, 6402604, 8003255, 9850160, 12805208, 16006510, 25610416, 32013020, 64026040, 128052080]

約数ペア:

[(1, 128052080), (2, 64026040), (4, 32013020), (5, 25610416), (8, 16006510), (10, 12805208), (13, 9850160), (16, 8003255), (20, 6402604), (26, 4925080), (40, 3201302), (52, 2462540), (65, 1970032), (80, 1600651), (104, 1231270), (130, 985016), (208, 615635), (260, 492508), (520, 246254), (1040, 123127)]