20504900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{15773}}^1$

素因数の和:15800

約数の個数: 36

約数和(自身を含む): 47921412

約数和(自身を除く): 27416512

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 15773, 31546, 63092, 78865, 157730, 205049, 315460, 394325, 410098, 788650, 820196, 1025245, 1577300, 2050490, 4100980, 5126225, 10252450, 20504900]

約数ペア:

[(1, 20504900), (2, 10252450), (4, 5126225), (5, 4100980), (10, 2050490), (13, 1577300), (20, 1025245), (25, 820196), (26, 788650), (50, 410098), (52, 394325), (65, 315460), (100, 205049), (130, 157730), (260, 78865), (325, 63092), (650, 31546), (1300, 15773)]