20946520400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{4028177}}^1$

素因数の和:4028208

約数の個数: 60

約数和(自身を含む): 54195106812

約数和(自身を除く): 33248586412

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 4028177, 8056354, 16112708, 20140885, 32225416, 40281770, 52366301, 64450832, 80563540, 100704425, 104732602, 161127080, 201408850, 209465204, 261831505, 322254160, 402817700, 418930408, 523663010, 805635400, 837860816, 1047326020, 1309157525, 1611270800, 2094652040, 2618315050, 4189304080, 5236630100, 10473260200, 20946520400]

約数ペア:

[(1, 20946520400), (2, 10473260200), (4, 5236630100), (5, 4189304080), (8, 2618315050), (10, 2094652040), (13, 1611270800), (16, 1309157525), (20, 1047326020), (25, 837860816), (26, 805635400), (40, 523663010), (50, 418930408), (52, 402817700), (65, 322254160), (80, 261831505), (100, 209465204), (104, 201408850), (130, 161127080), (200, 104732602), (208, 100704425), (260, 80563540), (325, 64450832), (400, 52366301), (520, 40281770), (650, 32225416), (1040, 20140885), (1300, 16112708), (2600, 8056354), (5200, 4028177)]