20804766520

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1206773}}^1$

素因数の和:1207215

約数の個数: 32

約数和(自身を含む): 46919373120

約数和(自身を除く): 26114606600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 8620, 17240, 1206773, 2413546, 4827092, 6033865, 9654184, 12067730, 24135460, 48270920, 520119163, 1040238326, 2080476652, 2600595815, 4160953304, 5201191630, 10402383260, 20804766520]

約数ペア:

[(1, 20804766520), (2, 10402383260), (4, 5201191630), (5, 4160953304), (8, 2600595815), (10, 2080476652), (20, 1040238326), (40, 520119163), (431, 48270920), (862, 24135460), (1724, 12067730), (2155, 9654184), (3448, 6033865), (4310, 4827092), (8620, 2413546), (17240, 1206773)]