20703800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7963}}^1$

素因数の和:7992

約数の個数: 48

約数和(自身を含む): 51845640

約数和(自身を除く): 31141840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 7963, 15926, 31852, 39815, 63704, 79630, 103519, 159260, 199075, 207038, 318520, 398150, 414076, 517595, 796300, 828152, 1035190, 1592600, 2070380, 2587975, 4140760, 5175950, 10351900, 20703800]

約数ペア:

[(1, 20703800), (2, 10351900), (4, 5175950), (5, 4140760), (8, 2587975), (10, 2070380), (13, 1592600), (20, 1035190), (25, 828152), (26, 796300), (40, 517595), (50, 414076), (52, 398150), (65, 318520), (100, 207038), (104, 199075), (130, 159260), (200, 103519), (260, 79630), (325, 63704), (520, 39815), (650, 31852), (1300, 15926), (2600, 7963)]