20784075

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21317}}^1$

素因数の和:21343

約数の個数: 24

約数和(自身を含む): 37008048

約数和(自身を除く): 16223973

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21317, 63951, 106585, 277121, 319755, 532925, 831363, 1385605, 1598775, 4156815, 6928025, 20784075]

約数ペア:

[(1, 20784075), (3, 6928025), (5, 4156815), (13, 1598775), (15, 1385605), (25, 831363), (39, 532925), (65, 319755), (75, 277121), (195, 106585), (325, 63951), (975, 21317)]