21404925

素因数分解:

$3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1669}}^1$

素因数の和:1707

約数の個数: 48

約数和(自身を含む): 41416000

約数和(自身を除く): 20011075

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 95, 135, 171, 225, 285, 475, 513, 675, 855, 1425, 1669, 2565, 4275, 5007, 8345, 12825, 15021, 25035, 31711, 41725, 45063, 75105, 95133, 125175, 158555, 225315, 285399, 375525, 475665, 792775, 856197, 1126575, 1426995, 2378325, 4280985, 7134975, 21404925]

約数ペア:

[(1, 21404925), (3, 7134975), (5, 4280985), (9, 2378325), (15, 1426995), (19, 1126575), (25, 856197), (27, 792775), (45, 475665), (57, 375525), (75, 285399), (95, 225315), (135, 158555), (171, 125175), (225, 95133), (285, 75105), (475, 45063), (513, 41725), (675, 31711), (855, 25035), (1425, 15021), (1669, 12825), (2565, 8345), (4275, 5007)]